640679639904

Names of 640679639904

• Cardinal: 640679639904 can be written as Six hundred forty billion, six hundred seventy-nine million, six hundred thirty-nine thousand, nine hundred four.

Scientific notation

• Scientific notation: 6.40679639904 × 10¹¹

Factors of 640679639904

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 347

Divisors of 640679639904

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 29 32 36 48 54 58 72 81 87 96 108 116 144 162 174 216 232 243 261 288 313 324 348 432 464 486 522 626 648 696 783 841 864 928 939 972 1044 1252 1296 1392 1566 1682 1878 1944 2088 2349 2504 2523 2592 2784 2817 3132 3364 3756 3888 4176 4698 5008 5046 5634 6264 6728 7047 7512 7569 7776 8352 8451 9077 9396 10016 10092 11268 12528 13456 14094 15024 15138 16902 18154 18792 20184 22536 22707 25056 25353 26912 27231 28188 30048 30276 33804 36308 37584 40368 45072 45414 50706 54462 56376 60552 67608 68121 72616 75168 76059 80736 81693 90144 90828 97969 101412 108924 112752 121104 135216 136242 145232 152118 163386 181656 195938 202824 204363 217848 225504 242208 245079 263233 270432 272484 290464 293907 304236 326772 363312 391876 405648 408726 435696 490158 526466 544968 587814 608472 653544 726624 735237 783752 789699 811296 817452 871392 881721 980316 1052932 1089936 1175628 1216944 1307088 1470474 1567504 1579398 1634904 1763442 1960632 2105864 2179872 2205711 2351256 2369097 2433888 2614176 2645163 2841101 2940948 3135008 3158796 3269808 3526884 3921264 4211728 4411422 4702512 4738194 5290326 5682202 5881896 6317592 6539616 7053768 7107291 7842528 7935489 8423456 8523303 8822844 9405024 9476388 10580652 11364404 11763792 12635184 14107536 14214582 15870978 17046606 17645688 18952776 21161304 21321873 22728808 23527584 23806467 25270368 25569909 28215072 28429164 31741956 34093212 35291376 37905552 42322608 42643746 45457616 47612934 51139818 56858328 63483912 63965619 68186424 70582752 75811104 76709727 82391929 84645216 85287492 90915232 95225868 102279636 113716656 126967824 127931238 136372848 153419454 164783858 170574984 190451736 204559272 227433312 230129181 247175787 253935648 255862476 272745696 306838908 329567716 341149968 380903472 409118544 460258362 494351574 511724952 613677816 659135432 682299936 690387543 741527361 761806944 818237088 920516724 988703148 1023449904 1227355632 1318270864 1380775086 1483054722 1841033448 1977406296 2046899808 2224582083 2454711264 2636541728 2761550172 2966109444 3682066896 3954812592 4449164166 5523100344 5932218888 6673746249 7364133792 7909625184 8898328332 11046200688 11864437776 13347492498 17796656664 20021238747 22092401376 23728875552 26694984996 35593313328 40042477494 53389969992 71186626656 80084954988 106779939984 160169909976 213559879968 320339819952 640679639904
• Sum of all divisors σ(n): 1963082233476
• Sum of proper divisors (its aliquot sum) s(n): 1322402593572
• 640679639904 is an abundant number, because the sum of its proper divisors (1322402593572) is greater than itself. Its abundance is 681722953668

Bases of 640679639904

• Binary: 1001010100101011011110110111101101100000₂
• Hexadecimal: 0x952B7B7B60
• Base-36: 86BO4600

Squares and roots of 640679639904

• 640679639904 squared (640679639904²) is 410470400987519109129216
• 640679639904 cubed (640679639904³) is 262980028695934228835224985885835264
• The square root of 640679639904 is 800424.6622287447
• The cube root of 640679639904 is 8620.7881805049

Scales and comparisons

• 640,679,639,904 seconds is equal to 20,371 years, 32 weeks, 5 days, 14 hours, 38 minutes, 24 seconds.
• To count from 1 to 640,679,639,904 would take you about forty thousand, seven hundred forty-three years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 640679639904 cubic inches would be around 718.4 feet tall.

Recreational maths with 640679639904

• 640679639904 backwards is 409936976046
• The number of decimal digits it has is: 12
• The sum of 640679639904's digits is 63
• More coming soon!