Is 826 a prime number? What are the divisors of 826?

## Parity of 826

826 is an even number, because it is evenly divisible by 2: 826 / 2 = 413.

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## Is 826 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 826 is about 28.740.

Thus, the square root of 826 is not an integer, and therefore 826 is not a square number.

## What is the square number of 826?

The square of a number (here 826) is the result of the product of this number (826) by itself (i.e., 826 × 826); the square of 826 is sometimes called "raising 826 to the power 2", or "826 squared".

The square of 826 is 682 276 because 826 × 826 = 8262 = 682 276.

As a consequence, 826 is the square root of 682 276.

## Number of digits of 826

826 is a number with 3 digits.

## What are the multiples of 826?

The multiples of 826 are all integers evenly divisible by 826, that is all numbers such that the remainder of the division by 826 is zero. There are infinitely many multiples of 826. The smallest multiples of 826 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 826). 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 28.740). 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 826

• Preceding numbers: …824, 825
• Following numbers: 827, 828

### Nearest numbers from 826

• Preceding prime number: 823
• Following prime number: 827
Find out whether some integer is a prime number