# 605

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

What does the number 605 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

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

## Prime factorization of 605:

### 5 × 112

(5 × 11 × 11)

See below for interesting mathematical facts about the number 605 from the Numbermatics database.

### Names of 605

• Cardinal: 605 can be written as Six hundred five.

### Scientific notation

• Scientific notation: 6.05 × 102

### Factors of 605

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 16

### Divisors of 605

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 798
• Sum of proper divisors (its aliquot sum) s(n): 193
• 605 is a deficient number, because the sum of its proper divisors (193) is less than itself. Its deficiency is 412

### Bases of 605

• Binary: 10010111012
• Base-36: GT

### Squares and roots of 605

• 605 squared (6052) is 366025
• 605 cubed (6053) is 221445125
• The square root of 605 is 24.5967477525
• The cube root of 605 is 8.4576905581

### Scales and comparisons

How big is 605?
• 605 seconds is equal to 10 minutes, 5 seconds.
• To count from 1 to 605 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 605 cubic inches would be around 0.7 feet tall.

### Recreational maths with 605

• 605 backwards is 506
• 605 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 605's digits is 11
• More coming soon!