# 745

## 745 is an odd composite number composed of two prime numbers multiplied together.

What does the number 745 look like?

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

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

## Prime factorization of 745:

### 5 × 149

See below for interesting mathematical facts about the number 745 from the Numbermatics database.

### Names of 745

• Cardinal: 745 can be written as Seven hundred forty-five.

### Scientific notation

• Scientific notation: 7.45 × 102

### Factors of 745

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 154

### Divisors of 745

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 900
• Sum of proper divisors (its aliquot sum) s(n): 155
• 745 is a deficient number, because the sum of its proper divisors (155) is less than itself. Its deficiency is 590

### Bases of 745

• Binary: 10111010012
• Base-36: KP

### Squares and roots of 745

• 745 squared (7452) is 555025
• 745 cubed (7453) is 413493625
• The square root of 745 is 27.2946881277
• The cube root of 745 is 9.0653677013

### Scales and comparisons

How big is 745?
• 745 seconds is equal to 12 minutes, 25 seconds.
• To count from 1 to 745 would take you about six 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 745 cubic inches would be around 0.8 feet tall.

### Recreational maths with 745

• 745 backwards is 547
• The number of decimal digits it has is: 3
• The sum of 745's digits is 16
• More coming soon!

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The information we have on file for 745 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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