It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 8 508 887 is not a prime number.
For example, 8 508 887 can be divided by 1 553: 8 508 887 / 1553 = 5 479.
For 8 508 887 to be a prime number, it would have been required that 8 508 887 has only two divisors, i.e., itself and 1.
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8 508 887 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 8 508 887 is about 2 917.000.
Thus, the square root of 8 508 887 is not an integer, and therefore 8 508 887 is not a square number.
The square of a number (here 8 508 887) is the result of the product of this number (8 508 887) by itself (i.e., 8 508 887 × 8 508 887); the square of 8 508 887 is sometimes called "raising 8 508 887 to the power 2", or "8 508 887 squared".
The square of 8 508 887 is 72 401 157 978 769 because 8 508 887 × 8 508 887 = 8 508 8872 = 72 401 157 978 769.
As a consequence, 8 508 887 is the square root of 72 401 157 978 769.
The multiples of 8 508 887 are all integers evenly divisible by 8 508 887, that is all numbers such that the remainder of the division by 8 508 887 is zero. There are infinitely many multiples of 8 508 887. The smallest multiples of 8 508 887 are: