It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 498 664 is not a prime number.
For example, 498 664 can be divided by 2: 498 664 / 2 = 249 332.
For 498 664 to be a prime number, it would have been required that 498 664 has only two divisors, i.e., itself and 1.
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498 664 is an even number, because it is evenly divisible by 2: 498 664 / 2 = 249 332.
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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 498 664 is about 706.161.
Thus, the square root of 498 664 is not an integer, and therefore 498 664 is not a square number.
The square of a number (here 498 664) is the result of the product of this number (498 664) by itself (i.e., 498 664 × 498 664); the square of 498 664 is sometimes called "raising 498 664 to the power 2", or "498 664 squared".
The square of 498 664 is 248 665 784 896 because 498 664 × 498 664 = 498 6642 = 248 665 784 896.
As a consequence, 498 664 is the square root of 248 665 784 896.
The multiples of 498 664 are all integers evenly divisible by 498 664, that is all numbers such that the remainder of the division by 498 664 is zero. There are infinitely many multiples of 498 664. The smallest multiples of 498 664 are: