It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 997 338 is not a prime number.
For example, 997 338 can be divided by 2: 997 338 / 2 = 498 669.
For 997 338 to be a prime number, it would have been required that 997 338 has only two divisors, i.e., itself and 1.
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997 338 is an even number, because it is evenly divisible by 2: 997 338 / 2 = 498 669.
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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 997 338 is about 998.668.
Thus, the square root of 997 338 is not an integer, and therefore 997 338 is not a square number.
The square of a number (here 997 338) is the result of the product of this number (997 338) by itself (i.e., 997 338 × 997 338); the square of 997 338 is sometimes called "raising 997 338 to the power 2", or "997 338 squared".
The square of 997 338 is 994 683 086 244 because 997 338 × 997 338 = 997 3382 = 994 683 086 244.
As a consequence, 997 338 is the square root of 994 683 086 244.
The multiples of 997 338 are all integers evenly divisible by 997 338, that is all numbers such that the remainder of the division by 997 338 is zero. There are infinitely many multiples of 997 338. The smallest multiples of 997 338 are: