640
Number 640 (six hundred forty) is an even three-digits composite number and natural number following 639 and preceding 641.
| Nominal | 640 |
| Cardinal | six hundred forty |
Cardinal six hundred forty |
| Ordinal | 640th |
| Number of digits | 3 |
| Sum of digits | 10 |
| Product of digits | 0 |
| Number parity | Even |
Calculation was done in 0.0000350475 seconds
| Prime factorization | 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 |
| Prime factorization in exponent form | 27 x 5 |
| Prime factors | 2, 5 |
| Number of distinct prime factors ω(n) | 2 |
| Total number of prime factors Ω(n) | 8 |
| Sum of prime factors | 7 |
| Product of prime factors | 10 |
Calculation was done in 0.0000169277 seconds
| List of proper divisors | 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320 |
| List of all dividers | 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640 |
| Number of divisors d(n) | 16 |
| Sum of all divisors σ(n) | 1530 |
| Aliquot sum | 890 |
| 640 is an abundant number , because the sum of its proper divisors (890) is greater than itself. Its abundance is 250. |
Calculation was done in 0.0000150204 seconds
| Is 640 a prime number? | No |
| Is 640 a semiprime number? | No |
| Is 640 a Chen prime number? | No |
| Is 640 a Mersenne prime number? | No |
Calculation was done in 0.0000422001 seconds
| Is 640 a Catalan number? | No |
| Is 640 a Fibonacci number? | No |
| Is 640 a Idoneal number? | No |
Calculation was done in 0.0000047684 seconds
| 640 is not a Happy number |
| 640 is a Humble number |
| 640 is not a Münchhausen number |
| 640 is not a Perfect number |
| 640 is not a Perfect square |
| 640 is not a Palindrome |
Calculation was done in 0.0058450699 seconds
| Base | System | Value |
|---|
| 2 | Binary | 10100000002 |
| 3 | Ternary | 2122013 |
| 4 | Quaternary | 220004 |
| 5 | Quinary | 100305 |
| 6 | Senary | 25446 |
| 7 | Septenary | 16037 |
| 8 | Octal | 12008 |
| 9 | Nonary | 7819 |
| 10 | Decimal | 640 |
| 12 | Duodecimal | 45412 |
| 16 | Hexadecimal | 28016 |
| 20 | Vigesimal | 1c020 |
| 36 | Base36 | hs36 |
| 60 | Sexagesimal | Ae60 |
Calculation was done in 0.0000200272 seconds
| Square of 640 (n2) | 409600 |
| Cube of 640 (n3) | 262144000 |
| Square root of 640 | 25.298221281347 |
| Natural Logarithm (ln) of 640 | 6.4614681763537 |
| Decimal Logarithm (log) of 640 | 2.8061799739839 |
Calculation was done in 0.0000121593 seconds
| Sine of 640 | -0.77385249815577 |
| Cosecant of 640 | -1.2922359265922 |
| Cosine of 640 | 0.63336585880364 |
| Secant of 640 | 1.5788662841551 |
| Tangent of 640 | -1.2218096182473 |
| Cotangent of 640 | -0.81845811742298 |
Calculation was done in 0.0000050068 seconds
Is 640 an Even Number?
Yes, the number 640 is an even number.
Previous even number is
638
Calculation was done in 0.0000040531 seconds
| The spelling of 640 in words is "six hundred forty", meaning that: |
| 640 is an aban number (a number without the letter a) |
| 640 is not an eban number (as it contains the letter e) |
| 640 is not an iban number (as it contains the letter i) |
| 640 is not an oban number (as it contains the letter o) |
| 640 is not a tban number (as it contains the letter t) |
| 640 is not an uban number (as it contains the letter u) |
Calculation was done in 0.0000019073 seconds
| Bengali numerals | ৬৪০ |
| Eastern Arabic numerals | ٦٤٠ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓍧𓎉 |
| Khmer numerals | ៦៤០ |
| Japanese numerals | 六百四十 |
| Roman numerals | DCXL |
| Thai numerals | ๖๔๐ |
Calculation was done in 0.0000660419 seconds
| Arabic | ستة مائة و أربعون |
| Croatian | šeststo četrdeset |
| Czech | šest set čtyřicet |
| Danish | seks hundrede fyrre |
| Dutch | zeshonderdveertig |
| Estonian | alafa ade kple blaene |
| Faroese | sekshundraðogfýrati |
| Filipino | anim na daán at ápat na pû |
| Finnish | kuusisataaneljäkymmentä |
| French | six cent quarante |
| Greek | εξακόσια σαράντα |
| German | sechshundertvierzig |
| Hebrew | שש מאות ארבעים |
| Hindi | छह सौ चालीस |
| Hungarian | hatszáznegyven |
| Icelandic | sexhundrað og fjörutíu |
| Indonesian | enam ratus empat puluh |
| Italian | seicentoquaranta |
| Japanese | 六百四十 |
| Korean | 육백사십 |
| Latvian | sešsimt četrdesmit |
| Lithuanian | šeši šimtai keturiasdešimt |
| Norwegian | seks hundre og førti |
| Persian | ششصد و چهل |
| Polish | sześćset czterdzieści |
| Portuguese | seiscentos e quarenta |
| Romanian | şase sute patruzeci |
| Russian | шестьсот сорок |
| Serbian | шестсто четрдесет |
| Slovak | šesťsto štyridsať |
| Slovene | šesto štirideset |
| Spanish | seiscientos cuarenta |
| Swahili | mia sita na arobaini |
| Swedish | sexhundrafyrtio |
| Thai | หกร้อยสี่สิบ |
| Turkish | altı yüz kırk |
| Ukrainian | шістсот сорок |
| Vietnamese | sáu trăm bốn mươi |
Calculation was done in 0.0138530731 seconds
| Number 640 reversed | 046 |
| Unicode Character | U+0280 | ʀ |
| Hexadecimal color (shorthand) | #664400 | |
| Unix Timestamp | Thu, 01 Jan 1970 00:10:40 +0000 |
Calculation was done in 0.0000228882 seconds
This page was generated in 0.02 seconds.