It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 696 518 is not a prime number.
For example, 696 518 can be divided by 2: 696 518 / 2 = 348 259.
For 696 518 to be a prime number, it would have been required that 696 518 has only two divisors, i.e., itself and 1.
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696 518 is an even number, because it is evenly divisible by 2: 696 518 / 2 = 348 259.
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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 696 518 is about 834.577.
Thus, the square root of 696 518 is not an integer, and therefore 696 518 is not a square number.
The square of a number (here 696 518) is the result of the product of this number (696 518) by itself (i.e., 696 518 × 696 518); the square of 696 518 is sometimes called "raising 696 518 to the power 2", or "696 518 squared".
The square of 696 518 is 485 137 324 324 because 696 518 × 696 518 = 696 5182 = 485 137 324 324.
As a consequence, 696 518 is the square root of 485 137 324 324.
The multiples of 696 518 are all integers evenly divisible by 696 518, that is all numbers such that the remainder of the division by 696 518 is zero. There are infinitely many multiples of 696 518. The smallest multiples of 696 518 are: