It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 998 164 is not a prime number.
For example, 998 164 can be divided by 2: 998 164 / 2 = 499 082.
For 998 164 to be a prime number, it would have been required that 998 164 has only two divisors, i.e., itself and 1.
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998 164 is an even number, because it is evenly divisible by 2: 998 164 / 2 = 499 082.
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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 998 164 is about 999.082.
Thus, the square root of 998 164 is not an integer, and therefore 998 164 is not a square number.
The square of a number (here 998 164) is the result of the product of this number (998 164) by itself (i.e., 998 164 × 998 164); the square of 998 164 is sometimes called "raising 998 164 to the power 2", or "998 164 squared".
The square of 998 164 is 996 331 370 896 because 998 164 × 998 164 = 998 1642 = 996 331 370 896.
As a consequence, 998 164 is the square root of 996 331 370 896.
The multiples of 998 164 are all integers evenly divisible by 998 164, that is all numbers such that the remainder of the division by 998 164 is zero. There are infinitely many multiples of 998 164. The smallest multiples of 998 164 are: