It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 8 628 074 is not a prime number.
For example, 8 628 074 can be divided by 2: 8 628 074 / 2 = 4 314 037.
For 8 628 074 to be a prime number, it would have been required that 8 628 074 has only two divisors, i.e., itself and 1.
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8 628 074 is an even number, because it is evenly divisible by 2: 8 628 074 / 2 = 4 314 037.
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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 8 628 074 is about 2 937.358.
Thus, the square root of 8 628 074 is not an integer, and therefore 8 628 074 is not a square number.
The square of a number (here 8 628 074) is the result of the product of this number (8 628 074) by itself (i.e., 8 628 074 × 8 628 074); the square of 8 628 074 is sometimes called "raising 8 628 074 to the power 2", or "8 628 074 squared".
The square of 8 628 074 is 74 443 660 949 476 because 8 628 074 × 8 628 074 = 8 628 0742 = 74 443 660 949 476.
As a consequence, 8 628 074 is the square root of 74 443 660 949 476.
The multiples of 8 628 074 are all integers evenly divisible by 8 628 074, that is all numbers such that the remainder of the division by 8 628 074 is zero. There are infinitely many multiples of 8 628 074. The smallest multiples of 8 628 074 are: