It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 996 513 is not a prime number.
For example, 996 513 can be divided by 3: 996 513 / 3 = 332 171.
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For 996 513 to be a prime number, it would have been required that 996 513 has only two divisors, i.e., itself and 1.
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996 513 is an odd number, because it is not evenly divisible by 2.
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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 996 513 is about 998.255.
Thus, the square root of 996 513 is not an integer, and therefore 996 513 is not a square number.
The square of a number (here 996 513) is the result of the product of this number (996 513) by itself (i.e., 996 513 × 996 513); the square of 996 513 is sometimes called "raising 996 513 to the power 2", or "996 513 squared".
The square of 996 513 is 993 038 159 169 because 996 513 × 996 513 = 996 5132 = 993 038 159 169.
As a consequence, 996 513 is the square root of 993 038 159 169.
The multiples of 996 513 are all integers evenly divisible by 996 513, that is all numbers such that the remainder of the division by 996 513 is zero. There are infinitely many multiples of 996 513. The smallest multiples of 996 513 are: