It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 602 509 is not a prime number.
For example, 602 509 can be divided by 19: 602 509 / 19 = 31 711.
For 602 509 to be a prime number, it would have been required that 602 509 has only two divisors, i.e., itself and 1.
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602 509 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 602 509 is about 776.215.
Thus, the square root of 602 509 is not an integer, and therefore 602 509 is not a square number.
The square of a number (here 602 509) is the result of the product of this number (602 509) by itself (i.e., 602 509 × 602 509); the square of 602 509 is sometimes called "raising 602 509 to the power 2", or "602 509 squared".
The square of 602 509 is 363 017 095 081 because 602 509 × 602 509 = 602 5092 = 363 017 095 081.
As a consequence, 602 509 is the square root of 363 017 095 081.
The multiples of 602 509 are all integers evenly divisible by 602 509, that is all numbers such that the remainder of the division by 602 509 is zero. There are infinitely many multiples of 602 509. The smallest multiples of 602 509 are: