668268717920

Names of 668268717920

• Cardinal: 668268717920 can be written as Six hundred sixty-eight billion, two hundred sixty-eight million, seven hundred seventeen thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 6.6826871792 × 10¹¹

Factors of 668268717920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 3353

Divisors of 668268717920

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 47 80 89 94 160 178 188 235 349 356 376 445 470 698 712 752 890 940 1396 1424 1504 1745 1780 1880 2792 2848 2861 3490 3560 3760 4183 5584 5722 6980 7120 7520 8366 11168 11444 13960 14240 14305 16403 16732 20915 22888 27920 28610 31061 32806 33464 41830 45776 55840 57220 62122 65612 66928 82015 83660 91552 114440 124244 131224 133856 134467 155305 164030 167320 228880 248488 254629 262448 268934 310610 328060 334640 457760 496976 509258 524896 537868 621220 656120 669280 672335 993952 998489 1018516 1075736 1242440 1273145 1312240 1344670 1459867 1996978 2037032 2151472 2484880 2546290 2624480 2689340 2919734 3993956 4074064 4302944 4969760 4992445 5092580 5378680 5839468 7299335 7987912 8148128 9984890 10185160 10757360 11678936 11967563 14598670 15975824 19969780 20370320 21514720 23357872 23935126 29197340 31951648 39939560 40740640 46715744 46928983 47870252 58394680 59837815 79879120 88865521 93857966 95740504 116789360 119675630 159758240 177731042 187715932 191481008 233578720 234644915 239351260 355462084 375431864 382962016 444327605 469289830 478702520 710924168 750863728 888655210 938579660 957405040 1421848336 1501727456 1777310420 1877159320 1914810080 2843696672 3554620840 3754318640 4176679487 7109241680 7508637280 8353358974 14218483360 16706717948 20883397435 33413435896 41766794870 66826871792 83533589740 133653743584 167067179480 334134358960 668268717920
• Sum of all divisors σ(n): 1635736032000
• Sum of proper divisors (its aliquot sum) s(n): 967467314080
• 668268717920 is an abundant number, because the sum of its proper divisors (967467314080) is greater than itself. Its abundance is 299198596160

Bases of 668268717920

• Binary: 1001101110010111111010110110011101100000₂
• Hexadecimal: 0x9B97EB6760
• Base-36: 8IZXXUU8

Squares and roots of 668268717920

• 668268717920 squared (668268717920²) is 446583079350440529126400
• 668268717920 cubed (668268717920³) is 298437501882284518786505745625088000
• The square root of 668268717920 is 817477.0442770855
• The cube root of 668268717920 is 8742.7966529667

Scales and comparisons

• 668,268,717,920 seconds is equal to 21,248 years, 45 weeks, 4 days, 15 hours, 25 minutes, 20 seconds.
• To count from 1 to 668,268,717,920 would take you about forty-two thousand, four hundred ninety-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 668268717920 cubic inches would be around 728.6 feet tall.

Recreational maths with 668268717920

• 668268717920 backwards is 029717862866
• The number of decimal digits it has is: 12
• The sum of 668268717920's digits is 62
• More coming soon!