# 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:
• 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
• 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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Numbermatics. (2022). Number 166 - Facts about the integer. Retrieved 19 August 2022, from https://numbermatics.com/n/166/

Chicago style:
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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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