It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 637 584 is not a prime number.
For example, 637 584 can be divided by 2: 637 584 / 2 = 318 792.
For 637 584 to be a prime number, it would have been required that 637 584 has only two divisors, i.e., itself and 1.
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637 584 is an even number, because it is evenly divisible by 2: 637 584 / 2 = 318 792.
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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 637 584 is about 798.489.
Thus, the square root of 637 584 is not an integer, and therefore 637 584 is not a square number.
The square of a number (here 637 584) is the result of the product of this number (637 584) by itself (i.e., 637 584 × 637 584); the square of 637 584 is sometimes called "raising 637 584 to the power 2", or "637 584 squared".
The square of 637 584 is 406 513 357 056 because 637 584 × 637 584 = 637 5842 = 406 513 357 056.
As a consequence, 637 584 is the square root of 406 513 357 056.
The multiples of 637 584 are all integers evenly divisible by 637 584, that is all numbers such that the remainder of the division by 637 584 is zero. There are infinitely many multiples of 637 584. The smallest multiples of 637 584 are: