It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 720 298 is not a prime number.
For example, 720 298 can be divided by 2: 720 298 / 2 = 360 149.
For 720 298 to be a prime number, it would have been required that 720 298 has only two divisors, i.e., itself and 1.
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720 298 is an even number, because it is evenly divisible by 2: 720 298 / 2 = 360 149.
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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 720 298 is about 848.704.
Thus, the square root of 720 298 is not an integer, and therefore 720 298 is not a square number.
The square of a number (here 720 298) is the result of the product of this number (720 298) by itself (i.e., 720 298 × 720 298); the square of 720 298 is sometimes called "raising 720 298 to the power 2", or "720 298 squared".
The square of 720 298 is 518 829 208 804 because 720 298 × 720 298 = 720 2982 = 518 829 208 804.
As a consequence, 720 298 is the square root of 518 829 208 804.
The multiples of 720 298 are all integers evenly divisible by 720 298, that is all numbers such that the remainder of the division by 720 298 is zero. There are infinitely many multiples of 720 298. The smallest multiples of 720 298 are: