668456320

Names of 668456320

• Cardinal: 668456320 can be written as Six hundred sixty-eight million, four hundred fifty-six thousand, three hundred twenty.

Scientific notation

• Scientific notation: 6.6845632 × 10⁸

Factors of 668456320

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 229

Divisors of 668456320

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 17 20 28 32 34 35 40 56 64 67 68 70 80 85 112 119 128 131 134 136 140 160 170 224 238 262 268 272 280 320 335 340 448 469 476 524 536 544 560 595 640 655 670 680 896 917 938 952 1048 1072 1088 1120 1139 1190 1310 1340 1360 1834 1876 1904 2096 2144 2176 2227 2240 2278 2345 2380 2620 2680 2720 3668 3752 3808 4192 4288 4454 4480 4556 4585 4690 4760 5240 5360 5440 5695 7336 7504 7616 7973 8384 8576 8777 8908 9112 9170 9380 9520 10480 10720 10880 11135 11390 14672 15008 15232 15589 15946 16768 17554 17816 18224 18340 18760 19040 20960 21440 22270 22780 29344 30016 31178 31892 35108 35632 36448 36680 37520 38080 39865 41920 42880 43885 44540 45560 58688 60032 61439 62356 63784 70216 71264 72896 73360 75040 76160 77945 79730 83840 87770 89080 91120 117376 122878 124712 127568 140432 142528 145792 146720 149209 150080 155890 159460 175540 178160 182240 245756 249424 255136 280864 285056 293440 298418 300160 307195 311780 318920 351080 356320 364480 491512 498848 510272 561728 586880 596836 614390 623560 637840 702160 712640 728960 746045 983024 997696 1020544 1044463 1123456 1193672 1228780 1247120 1275680 1404320 1425280 1492090 1966048 1995392 2088926 2387344 2457560 2494240 2551360 2808640 2984180 3932096 4177852 4774688 4915120 4988480 5102720 5222315 5617280 5968360 7864192 8355704 9549376 9830240 9976960 10444630 11936720 16711408 19098752 19660480 20889260 23873440 33422816 39320960 41778520 47746880 66845632 83557040 95493760 133691264 167114080 334228160 668456320
• Sum of all divisors σ(n): 1977592320
• Sum of proper divisors (its aliquot sum) s(n): 1309136000
• 668456320 is an abundant number, because the sum of its proper divisors (1309136000) is greater than itself. Its abundance is 640679680

Bases of 668456320

• Binary: 100111110101111101010110000000₂
• Hexadecimal: 0x27D7D580
• Base-36: B1ZC74

Squares and roots of 668456320

• 668456320 squared (668456320²) is 446833851747942400
• 668456320 cubed (668456320³) is 298688912190855144275968000
• The square root of 668456320 is 25854.5222349979
• The cube root of 668456320 is 874.3614693841

Scales and comparisons

• 668,456,320 seconds is equal to 21 years, 13 weeks, 1 day, 18 hours, 18 minutes, 40 seconds.
• To count from 1 to 668,456,320 would take you about 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 668456320 cubic inches would be around 72.9 feet tall.

Recreational maths with 668456320

• 668456320 backwards is 023654866
• 668456320 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 668456320's digits is 40
• More coming soon!