69

Names of 69

• Cardinal: 69 can be written as Sixty-nine.

Scientific notation

• Scientific notation: 6.9 × 10¹

Factors of 69

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 26

Divisors of 69

• Number of divisors d(n): 4
• Complete list of divisors:
  1 3 23 69
• Sum of all divisors σ(n): 96
• Sum of proper divisors (its aliquot sum) s(n): 27
• 69 is a deficient number, because the sum of its proper divisors (27) is less than itself. Its deficiency is 42

Bases of 69

• Binary: 1000101₂
• Hexadecimal: 0x45
• Base-36: 1X

Squares and roots of 69

• 69 squared (69²) is 4761
• 69 cubed (69³) is 328509
• The square root of 69 is 8.3066238629
• The cube root of 69 is 4.1015659299

Scales and comparisons

• 69 seconds is equal to 1 minute, 9 seconds.
• To count from 1 to 69 would take you about thirty-four seconds.

  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 69 cubic inches would be around 0.3 feet tall.

Recreational maths with 69

• 69 backwards is 96
• The number of decimal digits it has is: 2
• The sum of 69's digits is 15
• More coming soon!