640490877684

Names of 640490877684

• Cardinal: 640490877684 can be written as Six hundred forty billion, four hundred ninety million, eight hundred seventy-seven thousand, six hundred eighty-four.

Scientific notation

• Scientific notation: 6.40490877684 × 10¹¹

Factors of 640490877684

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1346

Divisors of 640490877684

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 28 36 41 42 63 82 84 123 126 164 229 246 252 287 369 421 458 492 574 643 687 738 842 861 916 1148 1263 1286 1374 1476 1603 1684 1722 1929 2061 2526 2572 2583 2748 2947 3206 3444 3789 3858 4122 4501 4809 5052 5166 5787 5894 6412 7578 7716 8244 8841 9002 9389 9618 10332 11574 11788 13503 14427 15156 17261 17682 18004 18778 19236 23148 26363 26523 27006 28167 28854 34522 35364 37556 40509 51783 52726 53046 54012 56334 57708 65723 69044 79089 81018 84501 96409 103566 105452 106092 112668 120827 131446 147247 155349 158178 162036 169002 184541 192818 197169 207132 237267 241654 262892 270703 289227 294494 310698 316356 338004 362481 369082 385636 394338 441741 474534 483308 541406 553623 578454 588988 591507 621396 674863 724962 738164 788676 812109 867681 883482 949068 1030729 1082812 1087443 1107246 1156908 1183014 1325223 1349726 1449924 1624218 1660869 1735362 1766964 1894921 2024589 2061458 2174886 2214492 2366028 2436327 2650446 2699452 3092187 3248436 3321738 3470724 3789842 3952769 4049178 4122916 4349772 4872654 5300892 5684763 6037127 6073767 6184374 6643476 7579684 7905538 8098356 9276561 9745308 11098823 11369526 11858307 12074254 12147534 12368748 15811076 17054289 18111381 18553122 22197646 22739052 23716614 24148508 24295068 27669383 33296469 34108578 35574921 36222762 37106244 42259889 44395292 47433228 54334143 55338766 61990987 66592938 68217156 71149842 72445524 77691761 83008149 84519778 99889407 108668286 110677532 123981974 126779667 133185876 142299684 155383522 166016298 169039556 185972961 199778814 217336572 233075283 247963948 249024447 253559334 310767044 332032596 371945922 380339001 399557628 433936909 466150566 498048894 507118668 557918883 699225849 743891844 760678002 867873818 932301132 996097788 1115837766 1301810727 1398451698 1521356004 1735747636 2231675532 2541630467 2603621454 2796903396 3905432181 5083260934 5207242908 7624891401 7810864362 10166521868 15249782802 15621728724 17791413269 22874674203 30499565604 35582826538 45749348406 53374239807 71165653076 91498696812 106748479614 160122719421 213496959228 320245438842 640490877684
• Sum of all divisors σ(n): 1911203024640
• Sum of proper divisors (its aliquot sum) s(n): 1270712146956
• 640490877684 is an abundant number, because the sum of its proper divisors (1270712146956) is greater than itself. Its abundance is 630221269272

Bases of 640490877684

• Binary: 1001010100100000001110110011001011110100₂
• Hexadecimal: 0x95203B32F4
• Base-36: 868JQC50

Squares and roots of 640490877684

• 640490877684 squared (640490877684²) is 410228564396420649203856
• 640490877684 cubed (640490877684³) is 262747653261310775316638805277149504
• The square root of 640490877684 is 800306.7397467049
• The cube root of 640490877684 is 8619.9414552183

Scales and comparisons

• 640,490,877,684 seconds is equal to 20,365 years, 32 weeks, 4 days, 20 hours, 41 minutes, 24 seconds.
• To count from 1 to 640,490,877,684 would take you about forty thousand, seven hundred thirty-one 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 640490877684 cubic inches would be around 718.3 feet tall.

Recreational maths with 640490877684

• 640490877684 backwards is 486778094046
• 640490877684 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 640490877684's digits is 63
• More coming soon!