It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 495 498 is not a prime number.
For example, 495 498 can be divided by 2: 495 498 / 2 = 247 749.
For 495 498 to be a prime number, it would have been required that 495 498 has only two divisors, i.e., itself and 1.
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495 498 is an even number, because it is evenly divisible by 2: 495 498 / 2 = 247 749.
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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 495 498 is about 703.916.
Thus, the square root of 495 498 is not an integer, and therefore 495 498 is not a square number.
The square of a number (here 495 498) is the result of the product of this number (495 498) by itself (i.e., 495 498 × 495 498); the square of 495 498 is sometimes called "raising 495 498 to the power 2", or "495 498 squared".
The square of 495 498 is 245 518 268 004 because 495 498 × 495 498 = 495 4982 = 245 518 268 004.
As a consequence, 495 498 is the square root of 245 518 268 004.
The multiples of 495 498 are all integers evenly divisible by 495 498, that is all numbers such that the remainder of the division by 495 498 is zero. There are infinitely many multiples of 495 498. The smallest multiples of 495 498 are: