It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 396 264 is not a prime number.
For example, 396 264 can be divided by 2: 396 264 / 2 = 198 132.
For 396 264 to be a prime number, it would have been required that 396 264 has only two divisors, i.e., itself and 1.
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396 264 is an even number, because it is evenly divisible by 2: 396 264 / 2 = 198 132.
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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 396 264 is about 629.495.
Thus, the square root of 396 264 is not an integer, and therefore 396 264 is not a square number.
The square of a number (here 396 264) is the result of the product of this number (396 264) by itself (i.e., 396 264 × 396 264); the square of 396 264 is sometimes called "raising 396 264 to the power 2", or "396 264 squared".
The square of 396 264 is 157 025 157 696 because 396 264 × 396 264 = 396 2642 = 157 025 157 696.
As a consequence, 396 264 is the square root of 157 025 157 696.
The multiples of 396 264 are all integers evenly divisible by 396 264, that is all numbers such that the remainder of the division by 396 264 is zero. There are infinitely many multiples of 396 264. The smallest multiples of 396 264 are: