Is 6561 a prime number? What are the divisors of 6561?

## Parity of 6 561

6 561 is an odd number, because it is not evenly divisible by 2.

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## Is 6 561 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 6 561 is 81.

Therefore, the square root of 6 561 is an integer, and as a consequence 6 561 is a perfect square.

As a consequence, 81 is the square root of 6 561.

## What is the square number of 6 561?

The square of a number (here 6 561) is the result of the product of this number (6 561) by itself (i.e., 6 561 × 6 561); the square of 6 561 is sometimes called "raising 6 561 to the power 2", or "6 561 squared".

The square of 6 561 is 43 046 721 because 6 561 × 6 561 = 6 5612 = 43 046 721.

As a consequence, 6 561 is the square root of 43 046 721.

## Number of digits of 6 561

6 561 is a number with 4 digits.

## What are the multiples of 6 561?

The multiples of 6 561 are all integers evenly divisible by 6 561, that is all numbers such that the remainder of the division by 6 561 is zero. There are infinitely many multiples of 6 561. The smallest multiples of 6 561 are:

## Numbers near 6 561

### Nearest numbers from 6 561

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