It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 987 017 is not a prime number.
For example, 987 017 can be divided by 761: 987 017 / 761 = 1 297.
For 987 017 to be a prime number, it would have been required that 987 017 has only two divisors, i.e., itself and 1.
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987 017 is an odd number, because it is not evenly divisible by 2.
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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 987 017 is about 993.487.
Thus, the square root of 987 017 is not an integer, and therefore 987 017 is not a square number.
The square of a number (here 987 017) is the result of the product of this number (987 017) by itself (i.e., 987 017 × 987 017); the square of 987 017 is sometimes called "raising 987 017 to the power 2", or "987 017 squared".
The square of 987 017 is 974 202 558 289 because 987 017 × 987 017 = 987 0172 = 974 202 558 289.
As a consequence, 987 017 is the square root of 974 202 558 289.
The multiples of 987 017 are all integers evenly divisible by 987 017, that is all numbers such that the remainder of the division by 987 017 is zero. There are infinitely many multiples of 987 017. The smallest multiples of 987 017 are: