It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 720 704 is not a prime number.
For example, 720 704 can be divided by 2: 720 704 / 2 = 360 352.
For 720 704 to be a prime number, it would have been required that 720 704 has only two divisors, i.e., itself and 1.
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720 704 is an even number, because it is evenly divisible by 2: 720 704 / 2 = 360 352.
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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 720 704 is about 848.943.
Thus, the square root of 720 704 is not an integer, and therefore 720 704 is not a square number.
The square of a number (here 720 704) is the result of the product of this number (720 704) by itself (i.e., 720 704 × 720 704); the square of 720 704 is sometimes called "raising 720 704 to the power 2", or "720 704 squared".
The square of 720 704 is 519 414 255 616 because 720 704 × 720 704 = 720 7042 = 519 414 255 616.
As a consequence, 720 704 is the square root of 519 414 255 616.
The multiples of 720 704 are all integers evenly divisible by 720 704, that is all numbers such that the remainder of the division by 720 704 is zero. There are infinitely many multiples of 720 704. The smallest multiples of 720 704 are: