It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 708 438 is not a prime number.
For example, 708 438 can be divided by 2: 708 438 / 2 = 354 219.
For 708 438 to be a prime number, it would have been required that 708 438 has only two divisors, i.e., itself and 1.
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708 438 is an even number, because it is evenly divisible by 2: 708 438 / 2 = 354 219.
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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 708 438 is about 841.688.
Thus, the square root of 708 438 is not an integer, and therefore 708 438 is not a square number.
The square of a number (here 708 438) is the result of the product of this number (708 438) by itself (i.e., 708 438 × 708 438); the square of 708 438 is sometimes called "raising 708 438 to the power 2", or "708 438 squared".
The square of 708 438 is 501 884 399 844 because 708 438 × 708 438 = 708 4382 = 501 884 399 844.
As a consequence, 708 438 is the square root of 501 884 399 844.
The multiples of 708 438 are all integers evenly divisible by 708 438, that is all numbers such that the remainder of the division by 708 438 is zero. There are infinitely many multiples of 708 438. The smallest multiples of 708 438 are: