| Nominal | 640990 |
| Cardinal | six hundred forty thousand nine hundred ninety |
Cardinal six hundred forty thousand nine hundred ninety | |
| Ordinal | 640,990th |
| Number of digits | 6 |
| Sum of digits | 28 |
| Product of digits | 0 |
| Number parity | Even |
| Prime factorization | 2 x 5 x 7 x 9157 |
| Prime factors | 2, 5, 7, 9157 |
| Number of distinct prime factors ω(n) | 4 |
| Total number of prime factors Ω(n) | 4 |
| Sum of prime factors | 9171 |
| Product of prime factors | 640990 |
| Is 640990 a prime number? | No |
| Is 640990 a semiprime number? | No |
| Is 640990 a Chen prime number? | No |
| Is 640990 a Mersenne prime number? | No |
| Is 640990 a Catalan number? | No |
| Is 640990 a Fibonacci number? | No |
| Is 640990 a Idoneal number? | No |
| Base | System | Value |
|---|---|---|
| 2 | Binary | 100111000111110111102 |
| 3 | Ternary | 10121200211013 |
| 4 | Quaternary | 21301331324 |
| 5 | Quinary | 1310024305 |
| 6 | Senary | 214233146 |
| 7 | Septenary | 53065307 |
| 8 | Octal | 23437368 |
| 9 | Nonary | 11762419 |
| 10 | Decimal | 640990 |
| 12 | Duodecimal | 26ab3a12 |
| 16 | Hexadecimal | 9c7de16 |
| 20 | Vigesimal | 4029a20 |
| 36 | Base36 | dqla36 |
| 60 | Sexagesimal | 2w3A60 |
| Square of 640990 (n2) | 410868180100 |
| Cube of 640990 (n3) | 263362394762299000 |
| Square root of 640990 | 800.61851090266 |
| Natural Logarithm (ln) of 640990 | 13.370769135157 |
| Decimal Logarithm (log) of 640990 | 5.806851254201 |
| Sine of 640990 | -0.98955119699184 |
| Cosecant of 640990 | -1.0105591333121 |
| Cosine of 640990 | -0.14418192859031 |
| Secant of 640990 | -6.935681952497 |
| Tangent of 640990 | 6.8632123780481 |
| Cotangent of 640990 | 0.14570436479548 |
| The spelling of 640990 in words is "six hundred forty thousand nine hundred ninety", meaning that: |
| 640990 is not an aban number (as it contains the letter a) |
| 640990 is not an eban number (as it contains the letter e) |
| 640990 is not an iban number (as it contains the letter i) |
| 640990 is not an oban number (as it contains the letter o) |
| 640990 is not a tban number (as it contains the letter t) |
| 640990 is not an uban number (as it contains the letter u) |
| Bengali numerals | ৬৪০৯৯০ |
| Eastern Arabic numerals | ٦٤٠٬٩٩٠ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓆐𓆐𓆐𓆐𓆐𓆐𓂭𓂭𓂭𓂭𓍪𓎎 |
| Khmer numerals | ៦៤០៩៩០ |
| Japanese numerals | 六十四万九百九十 |
| Roman numerals | n/a |
| Thai numerals | ๖๔๐๙๙๐ |
| Arabic | ستة مائة و أربعون ألف و تسعة مائة و تسعون |
| Croatian | šeststo četrdeset tisuća devetsto devedeset |
| Czech | šest set čtyřicet tisíc devět set devadesát |
| Danish | seks hundrede fyrre tusinde ni hundrede halvfems |
| Dutch | zeshonderdveertigduizend negenhonderdnegentig |
| Estonian | akpe alafa ade kple blaene alafa asieke kple blaasieke |
| Faroese | sekshundraðogfýrati tusin og níggjuhundraðogníti |
| Filipino | anim na daán at ápat na pû libó’t siyám na daán at siyám na pû |
| Finnish | kuusisataaneljäkymmentätuhattayhdeksänsataayhdeksänkymmentä |
| French | six cent quarante mille neuf cent quatre-vingt-dix |
| Greek | εξακόσιες σαράντα χίλιάδες εννιακόσια εννενήντα |
| German | sechshundertvierzigtausendneunhundertneunzig |
| Hebrew | שש מאות ארבעים אלף תשע מאות תשעים |
| Hindi | छह लाख चालीस हज़ार नौ सौ नब्बे |
| Hungarian | hatszáznegyvenezerkilencszázkilencven |
| Icelandic | sexhundrað og fjörutíu þúsund og níuhundrað og níutíu |
| Indonesian | enam ratus empat puluh ribu sembilan ratus sembilan puluh |
| Italian | seicentoquarantamilanovecentonovanta |
| Japanese | 六十四万九百九十 |
| Korean | 육십사만 구백구십 |
| Latvian | sešsimt četrdesmit tūkstoši deviņsimt deviņdesmit |
| Lithuanian | šeši šimtai keturiasdešimt tūkstančių devyni šimtai devyniasdešimt |
| Norwegian | seks hundre og førti tusen ni hundre og nitti |
| Persian | ششصد و چهل هزار و نهصد و نود |
| Polish | sześćset czterdzieści tysięcy dziewięćset dziewięćdziesiąt |
| Portuguese | seiscentos e quarenta mil novecentos e noventa |
| Romanian | şase sute patruzeci mii nouă sute nouăzeci |
| Russian | шестьсот сорок тысяч девятьсот девяносто |
| Serbian | шестсто четрдесет хиљада деветсто деведесет |
| Slovak | šesťsto štyridsať tisíc deväťsto deväťdesiat |
| Slovene | šesto štirideset tisuću devetsto devetdeset |
| Spanish | seiscientos cuarenta mil novecientos noventa |
| Swahili | elfu mia sita na arobaini, mia tisa na tisini |
| Swedish | sexhundrafyrtiotusenniohundranittio |
| Thai | หกแสนสี่หมื่นเก้าร้อยเก้าสิบ |
| Turkish | altı yüz kırk bin dokuz yüz doksan |
| Ukrainian | шістсот сорок тисяч девʼятсот девʼяносто |
| Vietnamese | sáu trăm bốn mươi nghìn chín trăm chín mươi |
| Number 640990 reversed | 099046 | |
| Unicode Character | U+9C7DE | |
| Hexadecimal color | #640990 | |
| Unix Timestamp | Thu, 08 Jan 1970 10:03:10 +0000 | |