668989542

Names of 668989542

• Cardinal: 668989542 can be written as Six hundred sixty-eight million, nine hundred eighty-nine thousand, five hundred forty-two.

Scientific notation

• Scientific notation: 6.68989542 × 10⁸

Factors of 668989542

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 232

Divisors of 668989542

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 6 13 17 26 34 39 51 78 102 169 197 221 338 394 442 507 591 663 1014 1182 1326 2561 2873 3349 5122 5746 6698 7683 8619 10047 15366 17238 20094 33293 38809 43537 66586 77618 87074 99879 116427 130611 199758 232854 261222 504517 565981 659753 1009034 1131962 1319506 1513551 1697943 1979259 3027102 3395886 3958518 6558721 8576789 13117442 17153578 19676163 25730367 39352326 51460734 111498257 222996514 334494771 668989542
• Sum of all divisors σ(n): 1541868696
• Sum of proper divisors (its aliquot sum) s(n): 872879154
• 668989542 is an abundant number, because the sum of its proper divisors (872879154) is greater than itself. Its abundance is 203889612

Bases of 668989542

• Binary: 100111110111111111100001100110₂
• Hexadecimal: 0x27DFF866
• Base-36: B2ARMU

Squares and roots of 668989542

• 668989542 squared (668989542²) is 447547007305369764
• 668989542 cubed (668989542³) is 299404267440689972559008088
• The square root of 668989542 is 25864.8321471453
• The cube root of 668989542 is 874.5938978633

Scales and comparisons

• 668,989,542 seconds is equal to 21 years, 14 weeks, 22 hours, 25 minutes, 42 seconds.
• To count from 1 to 668,989,542 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 668989542 cubic inches would be around 72.9 feet tall.

Recreational maths with 668989542

• 668989542 backwards is 245989866
• The number of decimal digits it has is: 9
• The sum of 668989542's digits is 57
• More coming soon!