166

166 is an even composite number composed of two prime numbers multiplied together.

What does the number 166 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

166 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 166:

2 × 83

See below for interesting mathematical facts about the number 166 from the Numbermatics database.

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

How big is 166?

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!

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The information we have on file for 166 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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