It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 718 709 is not a prime number.
For example, 718 709 can be divided by 17: 718 709 / 17 = 42 277.
For 718 709 to be a prime number, it would have been required that 718 709 has only two divisors, i.e., itself and 1.
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718 709 is an odd number, because it is not evenly divisible by 2.
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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 718 709 is about 847.767.
Thus, the square root of 718 709 is not an integer, and therefore 718 709 is not a square number.
The square of a number (here 718 709) is the result of the product of this number (718 709) by itself (i.e., 718 709 × 718 709); the square of 718 709 is sometimes called "raising 718 709 to the power 2", or "718 709 squared".
The square of 718 709 is 516 542 626 681 because 718 709 × 718 709 = 718 7092 = 516 542 626 681.
As a consequence, 718 709 is the square root of 516 542 626 681.
The multiples of 718 709 are all integers evenly divisible by 718 709, that is all numbers such that the remainder of the division by 718 709 is zero. There are infinitely many multiples of 718 709. The smallest multiples of 718 709 are: