It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 987 498 is not a prime number.
For example, 987 498 can be divided by 2: 987 498 / 2 = 493 749.
For 987 498 to be a prime number, it would have been required that 987 498 has only two divisors, i.e., itself and 1.
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987 498 is an even number, because it is evenly divisible by 2: 987 498 / 2 = 493 749.
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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 987 498 is about 993.729.
Thus, the square root of 987 498 is not an integer, and therefore 987 498 is not a square number.
The square of a number (here 987 498) is the result of the product of this number (987 498) by itself (i.e., 987 498 × 987 498); the square of 987 498 is sometimes called "raising 987 498 to the power 2", or "987 498 squared".
The square of 987 498 is 975 152 300 004 because 987 498 × 987 498 = 987 4982 = 975 152 300 004.
As a consequence, 987 498 is the square root of 975 152 300 004.
The multiples of 987 498 are all integers evenly divisible by 987 498, that is all numbers such that the remainder of the division by 987 498 is zero. There are infinitely many multiples of 987 498. The smallest multiples of 987 498 are: