It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 8 504 069 is not a prime number.
For example, 8 504 069 can be divided by 7: 8 504 069 / 7 = 1 214 867.
For 8 504 069 to be a prime number, it would have been required that 8 504 069 has only two divisors, i.e., itself and 1.
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8 504 069 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 8 504 069 is about 2 916.174.
Thus, the square root of 8 504 069 is not an integer, and therefore 8 504 069 is not a square number.
The square of a number (here 8 504 069) is the result of the product of this number (8 504 069) by itself (i.e., 8 504 069 × 8 504 069); the square of 8 504 069 is sometimes called "raising 8 504 069 to the power 2", or "8 504 069 squared".
The square of 8 504 069 is 72 319 189 556 761 because 8 504 069 × 8 504 069 = 8 504 0692 = 72 319 189 556 761.
As a consequence, 8 504 069 is the square root of 72 319 189 556 761.
The multiples of 8 504 069 are all integers evenly divisible by 8 504 069, that is all numbers such that the remainder of the division by 8 504 069 is zero. There are infinitely many multiples of 8 504 069. The smallest multiples of 8 504 069 are: