It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 723 708 is not a prime number.
For example, 723 708 can be divided by 2: 723 708 / 2 = 361 854.
For 723 708 to be a prime number, it would have been required that 723 708 has only two divisors, i.e., itself and 1.
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723 708 is an even number, because it is evenly divisible by 2: 723 708 / 2 = 361 854.
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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 723 708 is about 850.710.
Thus, the square root of 723 708 is not an integer, and therefore 723 708 is not a square number.
The square of a number (here 723 708) is the result of the product of this number (723 708) by itself (i.e., 723 708 × 723 708); the square of 723 708 is sometimes called "raising 723 708 to the power 2", or "723 708 squared".
The square of 723 708 is 523 753 269 264 because 723 708 × 723 708 = 723 7082 = 523 753 269 264.
As a consequence, 723 708 is the square root of 523 753 269 264.
The multiples of 723 708 are all integers evenly divisible by 723 708, that is all numbers such that the remainder of the division by 723 708 is zero. There are infinitely many multiples of 723 708. The smallest multiples of 723 708 are: