It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 996 998 724 is not a prime number.
For example, 996 998 724 can be divided by 2: 996 998 724 / 2 = 498 499 362.
For 996 998 724 to be a prime number, it would have been required that 996 998 724 has only two divisors, i.e., itself and 1.
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996 998 724 is an even number, because it is evenly divisible by 2: 996 998 724 / 2 = 498 499 362.
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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 996 998 724 is about 31 575.287.
Thus, the square root of 996 998 724 is not an integer, and therefore 996 998 724 is not a square number.
The square of a number (here 996 998 724) is the result of the product of this number (996 998 724) by itself (i.e., 996 998 724 × 996 998 724); the square of 996 998 724 is sometimes called "raising 996 998 724 to the power 2", or "996 998 724 squared".
The square of 996 998 724 is 994 006 455 657 628 160 because 996 998 724 × 996 998 724 = 996 998 7242 = 994 006 455 657 628 160.
As a consequence, 996 998 724 is the square root of 994 006 455 657 628 160.
996 998 724 is a number with 9 digits.
The multiples of 996 998 724 are all integers evenly divisible by 996 998 724, that is all numbers such that the remainder of the division by 996 998 724 is zero. There are infinitely many multiples of 996 998 724. The smallest multiples of 996 998 724 are: