Is 21673 a prime number?

21 673 is an odd number, because it is not evenly divisible by 2.

Find out more:

• What is an even 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 21 673 is about 147.218.

Thus, the square root of 21 673 is not an integer, and therefore 21 673 is not a square number.

Anyway, 21 673 is a prime number, and a prime number cannot be a perfect square.

The square of a number (here 21 673) is the result of the product of this number (21 673) by itself (i.e., 21 673 × 21 673); the square of 21 673 is sometimes called "raising 21 673 to the power 2", or "21 673 squared".

The square of 21 673 is 469 718 929 because 21 673 × 21 673 = 21 673² = 469 718 929.

As a consequence, 21 673 is the square root of 469 718 929.

21 673 is a number with 5 digits.

The multiples of 21 673 are all integers evenly divisible by 21 673, that is all numbers such that the remainder of the division by 21 673 is zero. There are infinitely many multiples of 21 673. The smallest multiples of 21 673 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 21 673 too, since 0 × 21 673 = 0
• 21 673: indeed, 21 673 is a multiple of itself, since 21 673 is evenly divisible by 21 673 (we have 21 673 / 21 673 = 1, so the remainder of this division is indeed zero)
• 43 346: indeed, 43 346 = 21 673 × 2
• 65 019: indeed, 65 019 = 21 673 × 3
• 86 692: indeed, 86 692 = 21 673 × 4
• 108 365: indeed, 108 365 = 21 673 × 5
• etc.

• Preceding numbers: …21 671, 21 672
• Following numbers: 21 674, 21 675…

Nearest numbers from 21 673

• Preceding prime number: 21 661
• Following prime number: 21 683

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• 21 673 est-il un nombre premier ?