Is 1720 a prime number?

1 720 is an even number, because it is evenly divisible by 2: 1 720 / 2 = 860.

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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 1 720 is about 41.473.

Thus, the square root of 1 720 is not an integer, and therefore 1 720 is not a square number.

The square of a number (here 1 720) is the result of the product of this number (1 720) by itself (i.e., 1 720 × 1 720); the square of 1 720 is sometimes called "raising 1 720 to the power 2", or "1 720 squared".

The square of 1 720 is 2 958 400 because 1 720 × 1 720 = 1 720² = 2 958 400.

As a consequence, 1 720 is the square root of 2 958 400.

1 720 is a number with 4 digits.

The multiples of 1 720 are all integers evenly divisible by 1 720, that is all numbers such that the remainder of the division by 1 720 is zero. There are infinitely many multiples of 1 720. The smallest multiples of 1 720 are:

• 0: indeed, 0 is divisible by any natural number, and it is thus a multiple of 1 720 too, since 0 × 1 720 = 0
• 1 720: indeed, 1 720 is a multiple of itself, since 1 720 is evenly divisible by 1 720 (we have 1 720 / 1 720 = 1, so the remainder of this division is indeed zero)
• 3 440: indeed, 3 440 = 1 720 × 2
• 5 160: indeed, 5 160 = 1 720 × 3
• 6 880: indeed, 6 880 = 1 720 × 4
• 8 600: indeed, 8 600 = 1 720 × 5
• etc.

• Preceding numbers: …1 718, 1 719
• Following numbers: 1 721, 1 722…

Nearest numbers from 1 720

• Preceding prime number: 1 709
• Following prime number: 1 721

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• 1 720 est-il un nombre premier ?