# 86

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

What does the number 86 look like?

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

86 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 86:

### 2 × 43

See below for interesting mathematical facts about the number 86 from the Numbermatics database.

### Names of 86

• Cardinal: 86 can be written as Eighty-six.

### Scientific notation

• Scientific notation: 8.6 × 101

### Factors of 86

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 45

### Divisors of 86

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 132
• Sum of proper divisors (its aliquot sum) s(n): 46
• 86 is a deficient number, because the sum of its proper divisors (46) is less than itself. Its deficiency is 40

### Bases of 86

• Binary: 10101102
• Base-36: 2E

### Squares and roots of 86

• 86 squared (862) is 7396
• 86 cubed (863) is 636056
• The square root of 86 is 9.2736184955
• The cube root of 86 is 4.4140049625

### Scales and comparisons

How big is 86?
• 86 seconds is equal to 1 minute, 26 seconds.
• To count from 1 to 86 would take you about forty-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 86 cubic inches would be around 0.4 feet tall.

### Recreational maths with 86

• 86 backwards is 68
• The number of decimal digits it has is: 2
• The sum of 86's digits is 14
• More coming soon!