It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 708 879 642 is not a prime number.
For example, 708 879 642 can be divided by 2: 708 879 642 / 2 = 354 439 821.
For 708 879 642 to be a prime number, it would have been required that 708 879 642 has only two divisors, i.e., itself and 1.
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708 879 642 is an even number, because it is evenly divisible by 2: 708 879 642 / 2 = 354 439 821.
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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 708 879 642 is about 26 624.794.
Thus, the square root of 708 879 642 is not an integer, and therefore 708 879 642 is not a square number.
The square of a number (here 708 879 642) is the result of the product of this number (708 879 642) by itself (i.e., 708 879 642 × 708 879 642); the square of 708 879 642 is sometimes called "raising 708 879 642 to the power 2", or "708 879 642 squared".
The square of 708 879 642 is 502 510 346 842 048 192 because 708 879 642 × 708 879 642 = 708 879 6422 = 502 510 346 842 048 192.
As a consequence, 708 879 642 is the square root of 502 510 346 842 048 192.
708 879 642 is a number with 9 digits.
The multiples of 708 879 642 are all integers evenly divisible by 708 879 642, that is all numbers such that the remainder of the division by 708 879 642 is zero. There are infinitely many multiples of 708 879 642. The smallest multiples of 708 879 642 are: