It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 704 509 is not a prime number.
For example, 704 509 can be divided by 13: 704 509 / 13 = 54 193.
For 704 509 to be a prime number, it would have been required that 704 509 has only two divisors, i.e., itself and 1.
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704 509 is an odd number, because it is not evenly divisible by 2.
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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 704 509 is about 839.350.
Thus, the square root of 704 509 is not an integer, and therefore 704 509 is not a square number.
The square of a number (here 704 509) is the result of the product of this number (704 509) by itself (i.e., 704 509 × 704 509); the square of 704 509 is sometimes called "raising 704 509 to the power 2", or "704 509 squared".
The square of 704 509 is 496 332 931 081 because 704 509 × 704 509 = 704 5092 = 496 332 931 081.
As a consequence, 704 509 is the square root of 496 332 931 081.
The multiples of 704 509 are all integers evenly divisible by 704 509, that is all numbers such that the remainder of the division by 704 509 is zero. There are infinitely many multiples of 704 509. The smallest multiples of 704 509 are: