166

Names of 166

• Cardinal: 166 can be written as One hundred sixty-six.

Scientific notation

• Scientific notation: 1.66 × 10²

Factors of 166

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 85

Divisors of 166

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2 83 166
• Sum of all divisors σ(n): 252
• Sum of proper divisors (its aliquot sum) s(n): 86
• 166 is a deficient number, because the sum of its proper divisors (86) is less than itself. Its deficiency is 80

Bases of 166

• Binary: 10100110₂
• Hexadecimal: 0xA6
• Base-36: 4M

Squares and roots of 166

• 166 squared (166²) is 27556
• 166 cubed (166³) is 4574296
• The square root of 166 is 12.8840987267
• The cube root of 166 is 5.4958646601

Scales and comparisons

• 166 seconds is equal to 2 minutes, 46 seconds.
• To count from 1 to 166 would take you about twenty-three 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 166 cubic inches would be around 0.5 feet tall.

Recreational maths with 166

• 166 backwards is 661
• The number of decimal digits it has is: 3
• The sum of 166's digits is 13
• More coming soon!