It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 324 998 is not a prime number.
For example, 324 998 can be divided by 2: 324 998 / 2 = 162 499.
For 324 998 to be a prime number, it would have been required that 324 998 has only two divisors, i.e., itself and 1.
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324 998 is an even number, because it is evenly divisible by 2: 324 998 / 2 = 162 499.
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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 324 998 is about 570.086.
Thus, the square root of 324 998 is not an integer, and therefore 324 998 is not a square number.
The square of a number (here 324 998) is the result of the product of this number (324 998) by itself (i.e., 324 998 × 324 998); the square of 324 998 is sometimes called "raising 324 998 to the power 2", or "324 998 squared".
The square of 324 998 is 105 623 700 004 because 324 998 × 324 998 = 324 9982 = 105 623 700 004.
As a consequence, 324 998 is the square root of 105 623 700 004.
The multiples of 324 998 are all integers evenly divisible by 324 998, that is all numbers such that the remainder of the division by 324 998 is zero. There are infinitely many multiples of 324 998. The smallest multiples of 324 998 are: