It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 998 362 is not a prime number.
For example, 998 362 can be divided by 2: 998 362 / 2 = 499 181.
For 998 362 to be a prime number, it would have been required that 998 362 has only two divisors, i.e., itself and 1.
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998 362 is an even number, because it is evenly divisible by 2: 998 362 / 2 = 499 181.
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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 998 362 is about 999.181.
Thus, the square root of 998 362 is not an integer, and therefore 998 362 is not a square number.
The square of a number (here 998 362) is the result of the product of this number (998 362) by itself (i.e., 998 362 × 998 362); the square of 998 362 is sometimes called "raising 998 362 to the power 2", or "998 362 squared".
The square of 998 362 is 996 726 683 044 because 998 362 × 998 362 = 998 3622 = 996 726 683 044.
As a consequence, 998 362 is the square root of 996 726 683 044.
The multiples of 998 362 are all integers evenly divisible by 998 362, that is all numbers such that the remainder of the division by 998 362 is zero. There are infinitely many multiples of 998 362. The smallest multiples of 998 362 are: