668909837172

Names of 668909837172

• Cardinal: 668909837172 can be written as Six hundred sixty-eight billion, nine hundred nine million, eight hundred thirty-seven thousand, one hundred seventy-two.

Scientific notation

• Scientific notation: 6.68909837172 × 10¹¹

Factors of 668909837172

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 7677166

Divisors of 668909837172

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 12 53 106 137 159 212 274 318 411 548 636 822 1644 7261 14522 21783 29044 43566 87132 7676971 15353942 23030913 30707884 46061826 92123652 406879463 813758926 1051745027 1220638389 1627517852 2103490054 2441276778 3155235081 4206980108 4882553556 6310470162 12620940324 55742486431 111484972862 167227459293 222969945724 334454918586 668909837172
• Sum of all divisors σ(n): 1601846269632
• Sum of proper divisors (its aliquot sum) s(n): 932936432460
• 668909837172 is an abundant number, because the sum of its proper divisors (932936432460) is greater than itself. Its abundance is 264026595288

Bases of 668909837172

• Binary: 1001101110111110001000100001101101110100₂
• Hexadecimal: 0x9BBE221B74
• Base-36: 8JAJN9MC

Squares and roots of 668909837172

• 668909837172 squared (668909837172²) is 447440370265471552957584
• 668909837172 cubed (668909837172³) is 299297265218455966902655488462512448
• The square root of 668909837172 is 817869.0831496199
• The cube root of 668909837172 is 8745.5916282861

Scales and comparisons

• 668,909,837,172 seconds is equal to 21,269 years, 13 weeks, 5 days, 6 minutes, 12 seconds.
• To count from 1 to 668,909,837,172 would take you about forty-two thousand, five hundred thirty-eight 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 668909837172 cubic inches would be around 728.8 feet tall.

Recreational maths with 668909837172

• 668909837172 backwards is 271738909866
• The number of decimal digits it has is: 12
• The sum of 668909837172's digits is 66
• More coming soon!