It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 798 508 is not a prime number.
For example, 798 508 can be divided by 2: 798 508 / 2 = 399 254.
For 798 508 to be a prime number, it would have been required that 798 508 has only two divisors, i.e., itself and 1.
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798 508 is an even number, because it is evenly divisible by 2: 798 508 / 2 = 399 254.
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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 798 508 is about 893.593.
Thus, the square root of 798 508 is not an integer, and therefore 798 508 is not a square number.
The square of a number (here 798 508) is the result of the product of this number (798 508) by itself (i.e., 798 508 × 798 508); the square of 798 508 is sometimes called "raising 798 508 to the power 2", or "798 508 squared".
The square of 798 508 is 637 615 026 064 because 798 508 × 798 508 = 798 5082 = 637 615 026 064.
As a consequence, 798 508 is the square root of 637 615 026 064.
The multiples of 798 508 are all integers evenly divisible by 798 508, that is all numbers such that the remainder of the division by 798 508 is zero. There are infinitely many multiples of 798 508. The smallest multiples of 798 508 are: