It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 604 504 is not a prime number.
For example, 604 504 can be divided by 2: 604 504 / 2 = 302 252.
For 604 504 to be a prime number, it would have been required that 604 504 has only two divisors, i.e., itself and 1.
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604 504 is an even number, because it is evenly divisible by 2: 604 504 / 2 = 302 252.
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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 604 504 is about 777.499.
Thus, the square root of 604 504 is not an integer, and therefore 604 504 is not a square number.
The square of a number (here 604 504) is the result of the product of this number (604 504) by itself (i.e., 604 504 × 604 504); the square of 604 504 is sometimes called "raising 604 504 to the power 2", or "604 504 squared".
The square of 604 504 is 365 425 086 016 because 604 504 × 604 504 = 604 5042 = 365 425 086 016.
As a consequence, 604 504 is the square root of 365 425 086 016.
The multiples of 604 504 are all integers evenly divisible by 604 504, that is all numbers such that the remainder of the division by 604 504 is zero. There are infinitely many multiples of 604 504. The smallest multiples of 604 504 are: