It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 718 018 is not a prime number.
For example, 718 018 can be divided by 2: 718 018 / 2 = 359 009.
For 718 018 to be a prime number, it would have been required that 718 018 has only two divisors, i.e., itself and 1.
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718 018 is an even number, because it is evenly divisible by 2: 718 018 / 2 = 359 009.
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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 718 018 is about 847.359.
Thus, the square root of 718 018 is not an integer, and therefore 718 018 is not a square number.
The square of a number (here 718 018) is the result of the product of this number (718 018) by itself (i.e., 718 018 × 718 018); the square of 718 018 is sometimes called "raising 718 018 to the power 2", or "718 018 squared".
The square of 718 018 is 515 549 848 324 because 718 018 × 718 018 = 718 0182 = 515 549 848 324.
As a consequence, 718 018 is the square root of 515 549 848 324.
The multiples of 718 018 are all integers evenly divisible by 718 018, that is all numbers such that the remainder of the division by 718 018 is zero. There are infinitely many multiples of 718 018. The smallest multiples of 718 018 are: