685723921020

Names of 685723921020

• Cardinal: 685723921020 can be written as Six hundred eighty-five billion, seven hundred twenty-three million, nine hundred twenty-one thousand and twenty.

Scientific notation

• Scientific notation: 6.8572392102 × 10¹¹

Factors of 685723921020

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 208

Divisors of 685723921020

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 47 54 60 81 90 94 108 135 141 151 162 180 188 235 243 270 282 302 324 405 423 453 470 486 540 564 604 705 729 755 810 846 906 940 972 1215 1269 1359 1410 1458 1510 1620 1692 1812 2115 2187 2209 2265 2430 2538 2718 2820 2916 3020 3645 3807 4077 4230 4374 4418 4530 4860 5076 5436 6345 6627 6795 7097 7290 7614 8154 8460 8748 8836 9060 10935 11045 11421 12231 12690 13254 13590 14194 14580 15228 16308 19035 19881 20385 21291 21870 22090 22842 24462 25380 26508 27180 28388 33135 34263 35485 36693 38070 39762 40770 42582 43740 44180 45684 48924 57105 59643 61155 63873 66270 68526 70970 73386 76140 79524 81540 85164 99405 102789 103823 106455 110079 114210 119286 122310 127746 132540 137052 141940 146772 171315 178929 183465 191619 198810 205578 207646 212910 220158 228420 238572 244620 255492 298215 311469 319365 330237 333559 342630 357858 366930 383238 397620 411156 415292 425820 440316 513945 519115 536787 550395 574857 596430 622938 638730 660474 667118 685260 715716 733860 766476 894645 934407 958095 1000677 1027890 1038230 1073574 1100790 1149714 1192860 1245876 1277460 1320948 1334236 1557345 1610361 1651185 1667795 1724571 1789290 1868814 1916190 2001354 2055780 2076460 2147148 2201580 2299428 2683935 2803221 2874285 3002031 3114690 3220722 3302370 3335590 3449142 3578580 3737628 3832380 4002708 4672035 4831083 5003385 5173713 5367870 5606442 5748570 6004062 6229380 6441444 6604740 6671180 6898284 8051805 8409663 8622855 9006093 9344070 9662166 10006770 10347426 10735740 11212884 11497140 12008124 14016105 15010155 15521139 15677273 16103610 16819326 17245710 18012186 18688140 19324332 20013540 20694852 24155415 25228989 25868565 27018279 28032210 30020310 31042278 31354546 32207220 33638652 34491420 36024372 42048315 45030465 47031819 48310830 50457978 51737130 54036558 56064420 60040620 62084556 62709092 75686967 77605695 78386365 81054837 84096630 90060930 94063638 96621660 100915956 103474260 108073116 126144945 135091395 141095457 151373934 155211390 156772730 162109674 168193260 180121860 188127276 227060901 235159095 243164511 252289890 270182790 282190914 302747868 310422780 313545460 324219348 378434835 405274185 423286371 454121802 470318190 486329022 504579780 540365580 564381828 705477285 729493533 756869670 810548370 846572742 908243604 940636380 972658044 1135304505 1215822555 1269859113 1410954570 1458987066 1513739340 1621096740 1693145484 2116431855 2270609010 2431645110 2539718226 2821909140 2917974132 3647467665 3809577339 4232863710 4541218020 4863290220 5079436452 6349295565 7294935330 7619154678 8465727420 11428732017 12698591130 14589870660 15238309356 19047886695 22857464034 25397182260 34286196051 38095773390 45714928068 57143660085 68572392102 76191546780 114287320170 137144784204 171430980255 228574640340 342861960510 685723921020
• Sum of all divisors σ(n): 2221264281600
• Sum of proper divisors (its aliquot sum) s(n): 1535540360580
• 685723921020 is an abundant number, because the sum of its proper divisors (1535540360580) is greater than itself. Its abundance is 849816439560

Bases of 685723921020

• Binary: 1001111110101000010101001010101001111100₂
• Hexadecimal: 0x9FA854AA7C
• Base-36: 8R0MBFR0

Squares and roots of 685723921020

• 685723921020 squared (685723921020²) is 470217295859043197840400
• 685723921020 cubed (685723921020³) is 322439247847884510848678684165208000
• The square root of 685723921020 is 828084.4890589365
• The cube root of 685723921020 is 8818.2640690229

Scales and comparisons

• 685,723,921,020 seconds is equal to 21,803 years, 46 weeks, 5 days, 10 hours, 57 minutes.
• To count from 1 to 685,723,921,020 would take you about forty-three thousand, six hundred seven 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 685723921020 cubic inches would be around 734.9 feet tall.

Recreational maths with 685723921020

• 685723921020 backwards is 020129327586
• 685723921020 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 685723921020's digits is 45
• More coming soon!