It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 997 376 is not a prime number.
For example, 997 376 can be divided by 2: 997 376 / 2 = 498 688.
For 997 376 to be a prime number, it would have been required that 997 376 has only two divisors, i.e., itself and 1.
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997 376 is an even number, because it is evenly divisible by 2: 997 376 / 2 = 498 688.
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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 997 376 is about 998.687.
Thus, the square root of 997 376 is not an integer, and therefore 997 376 is not a square number.
The square of a number (here 997 376) is the result of the product of this number (997 376) by itself (i.e., 997 376 × 997 376); the square of 997 376 is sometimes called "raising 997 376 to the power 2", or "997 376 squared".
The square of 997 376 is 994 758 885 376 because 997 376 × 997 376 = 997 3762 = 994 758 885 376.
As a consequence, 997 376 is the square root of 994 758 885 376.
The multiples of 997 376 are all integers evenly divisible by 997 376, that is all numbers such that the remainder of the division by 997 376 is zero. There are infinitely many multiples of 997 376. The smallest multiples of 997 376 are: