It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 709 722 018 is not a prime number.
For example, 709 722 018 can be divided by 2: 709 722 018 / 2 = 354 861 009.
For 709 722 018 to be a prime number, it would have been required that 709 722 018 has only two divisors, i.e., itself and 1.
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709 722 018 is an even number, because it is evenly divisible by 2: 709 722 018 / 2 = 354 861 009.
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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 709 722 018 is about 26 640.608.
Thus, the square root of 709 722 018 is not an integer, and therefore 709 722 018 is not a square number.
The square of a number (here 709 722 018) is the result of the product of this number (709 722 018) by itself (i.e., 709 722 018 × 709 722 018); the square of 709 722 018 is sometimes called "raising 709 722 018 to the power 2", or "709 722 018 squared".
The square of 709 722 018 is 503 705 342 833 992 320 because 709 722 018 × 709 722 018 = 709 722 0182 = 503 705 342 833 992 320.
As a consequence, 709 722 018 is the square root of 503 705 342 833 992 320.
709 722 018 is a number with 9 digits.
The multiples of 709 722 018 are all integers evenly divisible by 709 722 018, that is all numbers such that the remainder of the division by 709 722 018 is zero. There are infinitely many multiples of 709 722 018. The smallest multiples of 709 722 018 are: