It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 720 264 is not a prime number.
For example, 720 264 can be divided by 2: 720 264 / 2 = 360 132.
For 720 264 to be a prime number, it would have been required that 720 264 has only two divisors, i.e., itself and 1.
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720 264 is an even number, because it is evenly divisible by 2: 720 264 / 2 = 360 132.
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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 720 264 is about 848.684.
Thus, the square root of 720 264 is not an integer, and therefore 720 264 is not a square number.
The square of a number (here 720 264) is the result of the product of this number (720 264) by itself (i.e., 720 264 × 720 264); the square of 720 264 is sometimes called "raising 720 264 to the power 2", or "720 264 squared".
The square of 720 264 is 518 780 229 696 because 720 264 × 720 264 = 720 2642 = 518 780 229 696.
As a consequence, 720 264 is the square root of 518 780 229 696.
The multiples of 720 264 are all integers evenly divisible by 720 264, that is all numbers such that the remainder of the division by 720 264 is zero. There are infinitely many multiples of 720 264. The smallest multiples of 720 264 are: