It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 723 724 is not a prime number.
For example, 723 724 can be divided by 2: 723 724 / 2 = 361 862.
For 723 724 to be a prime number, it would have been required that 723 724 has only two divisors, i.e., itself and 1.
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723 724 is an even number, because it is evenly divisible by 2: 723 724 / 2 = 361 862.
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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 723 724 is about 850.720.
Thus, the square root of 723 724 is not an integer, and therefore 723 724 is not a square number.
The square of a number (here 723 724) is the result of the product of this number (723 724) by itself (i.e., 723 724 × 723 724); the square of 723 724 is sometimes called "raising 723 724 to the power 2", or "723 724 squared".
The square of 723 724 is 523 776 428 176 because 723 724 × 723 724 = 723 7242 = 523 776 428 176.
As a consequence, 723 724 is the square root of 523 776 428 176.
The multiples of 723 724 are all integers evenly divisible by 723 724, that is all numbers such that the remainder of the division by 723 724 is zero. There are infinitely many multiples of 723 724. The smallest multiples of 723 724 are: