It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 7 607 509 is not a prime number.
For example, 7 607 509 can be divided by 7: 7 607 509 / 7 = 1 086 787.
For 7 607 509 to be a prime number, it would have been required that 7 607 509 has only two divisors, i.e., itself and 1.
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7 607 509 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 7 607 509 is about 2 758.171.
Thus, the square root of 7 607 509 is not an integer, and therefore 7 607 509 is not a square number.
The square of a number (here 7 607 509) is the result of the product of this number (7 607 509) by itself (i.e., 7 607 509 × 7 607 509); the square of 7 607 509 is sometimes called "raising 7 607 509 to the power 2", or "7 607 509 squared".
The square of 7 607 509 is 57 874 193 185 081 because 7 607 509 × 7 607 509 = 7 607 5092 = 57 874 193 185 081.
As a consequence, 7 607 509 is the square root of 57 874 193 185 081.
The multiples of 7 607 509 are all integers evenly divisible by 7 607 509, that is all numbers such that the remainder of the division by 7 607 509 is zero. There are infinitely many multiples of 7 607 509. The smallest multiples of 7 607 509 are: