It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 516 702 is not a prime number.
For example, 516 702 can be divided by 2: 516 702 / 2 = 258 351.
For 516 702 to be a prime number, it would have been required that 516 702 has only two divisors, i.e., itself and 1.
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516 702 is an even number, because it is evenly divisible by 2: 516 702 / 2 = 258 351.
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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 516 702 is about 718.820.
Thus, the square root of 516 702 is not an integer, and therefore 516 702 is not a square number.
The square of a number (here 516 702) is the result of the product of this number (516 702) by itself (i.e., 516 702 × 516 702); the square of 516 702 is sometimes called "raising 516 702 to the power 2", or "516 702 squared".
The square of 516 702 is 266 980 956 804 because 516 702 × 516 702 = 516 7022 = 266 980 956 804.
As a consequence, 516 702 is the square root of 266 980 956 804.
The multiples of 516 702 are all integers evenly divisible by 516 702, that is all numbers such that the remainder of the division by 516 702 is zero. There are infinitely many multiples of 516 702. The smallest multiples of 516 702 are: