668805751680

Names of 668805751680

• Cardinal: 668805751680 can be written as Six hundred sixty-eight billion, eight hundred five million, seven hundred fifty-one thousand, six hundred eighty.

Scientific notation

• Scientific notation: 6.6880575168 × 10¹¹

Factors of 668805751680

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1331

Divisors of 668805751680

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 19 20 22 24 30 32 33 38 40 44 48 55 57 60 64 66 76 80 88 95 96 110 114 120 128 132 152 160 165 176 190 192 209 220 228 240 264 285 304 320 330 352 380 384 418 440 456 480 528 570 608 627 640 660 704 760 836 880 912 960 1045 1056 1140 1216 1254 1291 1320 1408 1520 1672 1760 1824 1920 2090 2112 2280 2432 2508 2582 2640 3040 3135 3344 3520 3648 3873 4180 4224 4560 5016 5164 5280 6080 6270 6455 6688 7040 7296 7746 8360 9120 10032 10328 10560 12160 12540 12910 13376 14201 15492 16720 18240 19365 20064 20656 21120 24529 25080 25820 26752 28402 30984 33440 36480 38730 40128 41312 42603 49058 50160 51640 56804 61968 66880 71005 73587 77460 80256 82624 85206 98116 100320 103280 113608 122645 123936 133760 142010 147174 154920 165248 170412 196232 200640 206560 213015 227216 245290 247872 269819 284020 294348 309840 340824 367935 392464 401280 413120 426030 454432 490580 495744 539638 568040 588696 619680 681648 735870 784928 809457 826240 852060 908864 981160 1079276 1136080 1177392 1239360 1349095 1363296 1471740 1569856 1618914 1666681 1704120 1817728 1962320 2158552 2272160 2354784 2478720 2698190 2726592 2943480 3139712 3237828 3333362 3408240 3924640 4047285 4317104 4544320 4709568 5000043 5396380 5453184 5886960 6475656 6666724 6816480 7849280 8094570 8333405 8634208 9088640 9419136 10000086 10792760 11773920 12951312 13333448 13632960 15698560 16189140 16666810 17268416 18333491 20000172 21585520 23547840 25000215 25902624 26666896 27265920 31666939 32378280 33333620 34536832 36666982 40000344 43171040 47095680 50000430 51805248 53333792 55000473 63333878 64756560 66667240 73333964 80000688 86342080 91667455 95000817 100000860 103610496 106667584 110000946 126667756 129513120 133334480 146667928 158334695 160001376 172684160 183334910 190001634 200001720 213335168 220001892 253335512 259026240 266668960 275002365 293335856 316669390 320002752 348336329 366669820 380003268 400003440 440003784 475004085 506671024 518052480 533337920 550004730 586671712 633338780 640005504 696672658 733339640 760006536 800006880 880007568 950008170 1013342048 1045008987 1066675840 1100009460 1173343424 1266677560 1393345316 1466679280 1520013072 1600013760 1741681645 1760015136 1900016340 2026684096 2090017974 2200018920 2346686848 2533355120 2786690632 2933358560 3040026144 3200027520 3483363290 3520030272 3800032680 4053368192 4180035948 4400037840 5066710240 5225044935 5573381264 5866717120 6080052288 6966726580 7040060544 7600065360 8360071896 8800075680 10133420480 10450089870 11146762528 11733434240 12160104576 13933453160 15200130720 16720143792 17600151360 20266840960 20900179740 22293525056 27866906320 30400261440 33440287584 35200302720 41800359480 44587050112 55733812640 60800522880 66880575168 83600718960 111467625280 133761150336 167201437920 222935250560 334402875840 668805751680
• Sum of all divisors σ(n): 2449918742400
• Sum of proper divisors (its aliquot sum) s(n): 1781112990720
• 668805751680 is an abundant number, because the sum of its proper divisors (1781112990720) is greater than itself. Its abundance is 1112307239040

Bases of 668805751680

• Binary: 1001101110110111111011011110001110000000₂
• Hexadecimal: 0x9BB7EDE380
• Base-36: 8J8TOCQO

Squares and roots of 668805751680

• 668805751680 squared (668805751680²) is 447301133480249822822400
• 668805751680 cubed (668805751680³) is 299157570804574497186922051141632000
• The square root of 668805751680 is 817805.4485511819
• The cube root of 668805751680 is 8745.1379864667

Scales and comparisons

• 668,805,751,680 seconds is equal to 21,265 years, 49 weeks, 4 days, 7 hours, 28 minutes.
• To count from 1 to 668,805,751,680 would take you about forty-two thousand, five 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 668805751680 cubic inches would be around 728.8 feet tall.

Recreational maths with 668805751680

• 668805751680 backwards is 086157508866
• 668805751680 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 668805751680's digits is 60
• More coming soon!