Is 670 a prime number? What are the divisors of 670?

## Parity of 670

670 is an even number, because it is evenly divisible by 2: 670 / 2 = 335.

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## Is 670 a perfect square number?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 670 is about 25.884.

Thus, the square root of 670 is not an integer, and therefore 670 is not a square number.

## What is the square number of 670?

The square of a number (here 670) is the result of the product of this number (670) by itself (i.e., 670 × 670); the square of 670 is sometimes called "raising 670 to the power 2", or "670 squared".

The square of 670 is 448 900 because 670 × 670 = 6702 = 448 900.

As a consequence, 670 is the square root of 448 900.

## Number of digits of 670

670 is a number with 3 digits.

## What are the multiples of 670?

The multiples of 670 are all integers evenly divisible by 670, that is all numbers such that the remainder of the division by 670 is zero. There are infinitely many multiples of 670. The smallest multiples of 670 are:

## How to determine whether an integer is a prime number?

To determine the primality of a number, several algorithms can be used. The most naive technique is to test all divisors strictly smaller to the number of which we want to determine the primality (here 670). First, we can eliminate all even numbers greater than 2 (and hence 4, 6, 8…). Then, we can stop this check when we reach the square root of the number of which we want to determine the primality (here the square root is about 25.884). Historically, the sieve of Eratosthenes (dating from the Greek mathematics) implements this technique in a relatively efficient manner.

More modern techniques include the sieve of Atkin, probabilistic algorithms, and the cyclotomic AKS test.

## Numbers near 670

• Preceding numbers: …668, 669
• Following numbers: 671, 672

### Nearest numbers from 670

• Preceding prime number: 661
• Following prime number: 673
Find out whether some integer is a prime number