# 678

## 678 is an even composite number composed of three prime numbers multiplied together.

What does the number 678 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

678 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 678:

### 2 × 3 × 113

See below for interesting mathematical facts about the number 678 from the Numbermatics database.

### Names of 678

• Cardinal: 678 can be written as Six hundred seventy-eight.

### Scientific notation

• Scientific notation: 6.78 × 102

### Factors of 678

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 118

### Divisors of 678

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 1368
• Sum of proper divisors (its aliquot sum) s(n): 690
• 678 is an abundant number, because the sum of its proper divisors (690) is greater than itself. Its abundance is 12

### Bases of 678

• Binary: 10101001102
• Base-36: IU

### Squares and roots of 678

• 678 squared (6782) is 459684
• 678 cubed (6783) is 311665752
• The square root of 678 is 26.0384331327
• The cube root of 678 is 8.7850296435

### Scales and comparisons

How big is 678?
• 678 seconds is equal to 11 minutes, 18 seconds.
• To count from 1 to 678 would take you about five minutes.

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 678 cubic inches would be around 0.7 feet tall.

### Recreational maths with 678

• 678 backwards is 876
• The number of decimal digits it has is: 3
• The sum of 678's digits is 21
• More coming soon!

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The information we have on file for 678 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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