It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 8 002 671 is not a prime number.
For example, 8 002 671 can be divided by 3: 8 002 671 / 3 = 2 667 557.
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For 8 002 671 to be a prime number, it would have been required that 8 002 671 has only two divisors, i.e., itself and 1.
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8 002 671 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 8 002 671 is about 2 828.899.
Thus, the square root of 8 002 671 is not an integer, and therefore 8 002 671 is not a square number.
The square of a number (here 8 002 671) is the result of the product of this number (8 002 671) by itself (i.e., 8 002 671 × 8 002 671); the square of 8 002 671 is sometimes called "raising 8 002 671 to the power 2", or "8 002 671 squared".
The square of 8 002 671 is 64 042 743 134 241 because 8 002 671 × 8 002 671 = 8 002 6712 = 64 042 743 134 241.
As a consequence, 8 002 671 is the square root of 64 042 743 134 241.
The multiples of 8 002 671 are all integers evenly divisible by 8 002 671, that is all numbers such that the remainder of the division by 8 002 671 is zero. There are infinitely many multiples of 8 002 671. The smallest multiples of 8 002 671 are: