It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 708 664 is not a prime number.
For example, 708 664 can be divided by 2: 708 664 / 2 = 354 332.
For 708 664 to be a prime number, it would have been required that 708 664 has only two divisors, i.e., itself and 1.
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708 664 is an even number, because it is evenly divisible by 2: 708 664 / 2 = 354 332.
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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 708 664 is about 841.822.
Thus, the square root of 708 664 is not an integer, and therefore 708 664 is not a square number.
The square of a number (here 708 664) is the result of the product of this number (708 664) by itself (i.e., 708 664 × 708 664); the square of 708 664 is sometimes called "raising 708 664 to the power 2", or "708 664 squared".
The square of 708 664 is 502 204 664 896 because 708 664 × 708 664 = 708 6642 = 502 204 664 896.
As a consequence, 708 664 is the square root of 502 204 664 896.
The multiples of 708 664 are all integers evenly divisible by 708 664, that is all numbers such that the remainder of the division by 708 664 is zero. There are infinitely many multiples of 708 664. The smallest multiples of 708 664 are: