66741990

Names of 66741990

• Cardinal: 66741990 can be written as Sixty-six million, seven hundred forty-one thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 6.674199 × 10⁷

Factors of 66741990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 3677

Divisors of 66741990

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 30 35 42 70 89 105 178 210 267 445 534 623 890 1246 1335 1869 2670 3115 3571 3738 6230 7142 9345 10713 17855 18690 21426 24997 35710 49994 53565 74991 107130 124985 149982 249970 317819 374955 635638 749910 953457 1589095 1906914 2224733 3178190 4449466 4767285 6674199 9534570 11123665 13348398 22247330 33370995 66741990
• Sum of all divisors σ(n): 185172480
• Sum of proper divisors (its aliquot sum) s(n): 118430490
• 66741990 is an abundant number, because the sum of its proper divisors (118430490) is greater than itself. Its abundance is 51688500

Bases of 66741990

• Binary: 11111110100110011011100110₂
• Hexadecimal: 0x3FA66E6
• Base-36: 13QIG6

Squares and roots of 66741990

• 66741990 squared (66741990²) is 4454493229160100
• 66741990 cubed (66741990³) is 297301742555671102599000
• The square root of 66741990 is 8169.5771004379
• The cube root of 66741990 is 405.6327861371

Scales and comparisons

• 66,741,990 seconds is equal to 2 years, 6 weeks, 2 days, 11 hours, 26 minutes, 30 seconds.
• To count from 1 to 66,741,990 would take you about three 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 66741990 cubic inches would be around 33.8 feet tall.

Recreational maths with 66741990

• 66741990 backwards is 09914766
• 66741990 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 66741990's digits is 42
• More coming soon!