Is 77920 a prime number?

77 920 is an even number, because it is evenly divisible by 2: 77 920 / 2 = 38 960.

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• 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 77 920 is about 279.142.

Thus, the square root of 77 920 is not an integer, and therefore 77 920 is not a square number.

The square of a number (here 77 920) is the result of the product of this number (77 920) by itself (i.e., 77 920 × 77 920); the square of 77 920 is sometimes called "raising 77 920 to the power 2", or "77 920 squared".

The square of 77 920 is 6 071 526 400 because 77 920 × 77 920 = 77 920² = 6 071 526 400.

As a consequence, 77 920 is the square root of 6 071 526 400.

77 920 is a number with 5 digits.

The multiples of 77 920 are all integers evenly divisible by 77 920, that is all numbers such that the remainder of the division by 77 920 is zero. There are infinitely many multiples of 77 920. The smallest multiples of 77 920 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 77 920 too, since 0 × 77 920 = 0
• 77 920: indeed, 77 920 is a multiple of itself, since 77 920 is evenly divisible by 77 920 (we have 77 920 / 77 920 = 1, so the remainder of this division is indeed zero)
• 155 840: indeed, 155 840 = 77 920 × 2
• 233 760: indeed, 233 760 = 77 920 × 3
• 311 680: indeed, 311 680 = 77 920 × 4
• 389 600: indeed, 389 600 = 77 920 × 5
• etc.

• Preceding numbers: …77 918, 77 919
• Following numbers: 77 921, 77 922…

Nearest numbers from 77 920

• Preceding prime number: 77 899
• Following prime number: 77 929

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• 77 920 est-il un nombre premier ?