It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 998 504 is not a prime number.
For example, 998 504 can be divided by 2: 998 504 / 2 = 499 252.
For 998 504 to be a prime number, it would have been required that 998 504 has only two divisors, i.e., itself and 1.
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998 504 is an even number, because it is evenly divisible by 2: 998 504 / 2 = 499 252.
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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 998 504 is about 999.252.
Thus, the square root of 998 504 is not an integer, and therefore 998 504 is not a square number.
The square of a number (here 998 504) is the result of the product of this number (998 504) by itself (i.e., 998 504 × 998 504); the square of 998 504 is sometimes called "raising 998 504 to the power 2", or "998 504 squared".
The square of 998 504 is 997 010 238 016 because 998 504 × 998 504 = 998 5042 = 997 010 238 016.
As a consequence, 998 504 is the square root of 997 010 238 016.
The multiples of 998 504 are all integers evenly divisible by 998 504, that is all numbers such that the remainder of the division by 998 504 is zero. There are infinitely many multiples of 998 504. The smallest multiples of 998 504 are: