It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 7 664 459 is not a prime number.
For example, 7 664 459 can be divided by 11: 7 664 459 / 11 = 696 769.
For 7 664 459 to be a prime number, it would have been required that 7 664 459 has only two divisors, i.e., itself and 1.
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7 664 459 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 7 664 459 is about 2 768.476.
Thus, the square root of 7 664 459 is not an integer, and therefore 7 664 459 is not a square number.
The square of a number (here 7 664 459) is the result of the product of this number (7 664 459) by itself (i.e., 7 664 459 × 7 664 459); the square of 7 664 459 is sometimes called "raising 7 664 459 to the power 2", or "7 664 459 squared".
The square of 7 664 459 is 58 743 931 762 681 because 7 664 459 × 7 664 459 = 7 664 4592 = 58 743 931 762 681.
As a consequence, 7 664 459 is the square root of 58 743 931 762 681.
The multiples of 7 664 459 are all integers evenly divisible by 7 664 459, that is all numbers such that the remainder of the division by 7 664 459 is zero. There are infinitely many multiples of 7 664 459. The smallest multiples of 7 664 459 are: