It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 708 489 is not a prime number.
For example, 708 489 can be divided by 3: 708 489 / 3 = 236 163.
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For 708 489 to be a prime number, it would have been required that 708 489 has only two divisors, i.e., itself and 1.
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708 489 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 708 489 is about 841.718.
Thus, the square root of 708 489 is not an integer, and therefore 708 489 is not a square number.
The square of a number (here 708 489) is the result of the product of this number (708 489) by itself (i.e., 708 489 × 708 489); the square of 708 489 is sometimes called "raising 708 489 to the power 2", or "708 489 squared".
The square of 708 489 is 501 956 663 121 because 708 489 × 708 489 = 708 4892 = 501 956 663 121.
As a consequence, 708 489 is the square root of 501 956 663 121.
The multiples of 708 489 are all integers evenly divisible by 708 489, that is all numbers such that the remainder of the division by 708 489 is zero. There are infinitely many multiples of 708 489. The smallest multiples of 708 489 are: