It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 709 642 is not a prime number.
For example, 709 642 can be divided by 2: 709 642 / 2 = 354 821.
For 709 642 to be a prime number, it would have been required that 709 642 has only two divisors, i.e., itself and 1.
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709 642 is an even number, because it is evenly divisible by 2: 709 642 / 2 = 354 821.
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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 709 642 is about 842.403.
Thus, the square root of 709 642 is not an integer, and therefore 709 642 is not a square number.
The square of a number (here 709 642) is the result of the product of this number (709 642) by itself (i.e., 709 642 × 709 642); the square of 709 642 is sometimes called "raising 709 642 to the power 2", or "709 642 squared".
The square of 709 642 is 503 591 768 164 because 709 642 × 709 642 = 709 6422 = 503 591 768 164.
As a consequence, 709 642 is the square root of 503 591 768 164.
The multiples of 709 642 are all integers evenly divisible by 709 642, that is all numbers such that the remainder of the division by 709 642 is zero. There are infinitely many multiples of 709 642. The smallest multiples of 709 642 are: