| Nominal | 6840 |
| Cardinal | six thousand eight hundred forty |
Cardinal six thousand eight hundred forty | |
| Ordinal | 6,840th |
| Number of digits | 4 |
| Sum of digits | 18 |
| Product of digits | 0 |
| Number parity | Even |
| Prime factorization | 2 x 2 x 2 x 3 x 3 x 5 x 19 |
| Prime factorization in exponent form | 23 x 32 x 5 x 19 |
| Prime factors | 2, 3, 5, 19 |
| Number of distinct prime factors ω(n) | 4 |
| Total number of prime factors Ω(n) | 7 |
| Sum of prime factors | 29 |
| Product of prime factors | 570 |
| Is 6840 a prime number? | No |
| Is 6840 a semiprime number? | No |
| Is 6840 a Chen prime number? | No |
| Is 6840 a Mersenne prime number? | No |
| Is 6840 a Catalan number? | No |
| Is 6840 a Fibonacci number? | No |
| Is 6840 a Idoneal number? | No |
| Square of 6840 (n2) | 46785600 |
| Cube of 6840 (n3) | 320013504000 |
| Square root of 6840 | 82.704292512541 |
| Natural Logarithm (ln) of 6840 | 8.8305430106166 |
| Decimal Logarithm (log) of 6840 | 3.8350561017201 |
| Sine of 6840 | -0.6836798042336 |
| Cosecant of 6840 | -1.4626730141912 |
| Cosine of 6840 | -0.72978210808645 |
| Secant of 6840 | -1.3702720153308 |
| Tangent of 6840 | 0.93682730318817 |
| Cotangent of 6840 | 1.0674325957376 |
| The spelling of 6840 in words is "six thousand eight hundred forty", meaning that: |
| 6840 is not an aban number (as it contains the letter a) |
| 6840 is not an eban number (as it contains the letter e) |
| 6840 is not an iban number (as it contains the letter i) |
| 6840 is not an oban number (as it contains the letter o) |
| 6840 is not a tban number (as it contains the letter t) |
| 6840 is not an uban number (as it contains the letter u) |
| Bengali numerals | ৬৮৪০ |
| Eastern Arabic numerals | ٦٬٨٤٠ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓆼𓆼𓆼𓆼𓆼𓆼𓍩𓎉 |
| Khmer numerals | ៦៨៤០ |
| Japanese numerals | 六千八百四十 |
| Roman numerals | n/a |
| Thai numerals | ๖๘๔๐ |
| Arabic | ستة آلاف و ثمانية مائة و أربعون |
| Croatian | šest tisuća osamsto četrdeset |
| Czech | šest tisíc osm set čtyřicet |
| Danish | seks tusinde otte hundrede fyrre |
| Dutch | zesduizend achthonderdveertig |
| Estonian | akpe ade alafa enyi kple blaene |
| Faroese | seks tusin og áttahundraðogfýrati |
| Filipino | anim na libó’t walóng daán at ápat na pû |
| Finnish | kuusituhattakahdeksansataaneljäkymmentä |
| French | six mille huit cent quarante |
| Greek | έξι χίλιάδες οκτακόσια σαράντα |
| German | sechstausendachthundertvierzig |
| Hebrew | ששת אלפים שמונה מאות ארבעים |
| Hindi | छह हज़ार आठ सौ चालीस |
| Hungarian | hatezernyolcszáznegyven |
| Icelandic | sex þúsund og áttahundrað og fjörutíu |
| Indonesian | enam ribu delapan ratus empat puluh |
| Italian | seimilaottocentoquaranta |
| Japanese | 六千八百四十 |
| Korean | 육천팔백사십 |
| Latvian | seštūkstoš astoņsimt četrdesmit |
| Lithuanian | šeši tūkstančiai aštuoni šimtai keturiasdešimt |
| Norwegian | seks tusen åtte hundre og førti |
| Persian | شش هزار و هشتصد و چهل |
| Polish | sześć tysięcy osiemset czterdzieści |
| Portuguese | seis mil oitocentos e quarenta |
| Romanian | şase mii opt sute patruzeci |
| Russian | шесть тысяч восемьсот сорок |
| Serbian | шест хиљада осамсто четрдесет |
| Slovak | šesť tisíc osemsto štyridsať |
| Slovene | šest tisuću osemsto štirideset |
| Spanish | seis mil ochocientos cuarenta |
| Swahili | elfu sita, mia nane na arobaini |
| Swedish | sextusenåttahundrafyrtio |
| Thai | หกพันแปดร้อยสี่สิบ |
| Turkish | altı bin sekiz yüz kırk |
| Ukrainian | шість тисяч вісімсот сорок |
| Vietnamese | sáu nghìn tám trăm bốn mươi |
| Number 6840 reversed | 0486 | |
| Unicode Character | U+1AB8 | ᪸ |
| Unix Timestamp | Thu, 01 Jan 1970 01:54:00 +0000 | |