It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 498 216 is not a prime number.
For example, 498 216 can be divided by 2: 498 216 / 2 = 249 108.
For 498 216 to be a prime number, it would have been required that 498 216 has only two divisors, i.e., itself and 1.
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498 216 is an even number, because it is evenly divisible by 2: 498 216 / 2 = 249 108.
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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 498 216 is about 705.844.
Thus, the square root of 498 216 is not an integer, and therefore 498 216 is not a square number.
The square of a number (here 498 216) is the result of the product of this number (498 216) by itself (i.e., 498 216 × 498 216); the square of 498 216 is sometimes called "raising 498 216 to the power 2", or "498 216 squared".
The square of 498 216 is 248 219 182 656 because 498 216 × 498 216 = 498 2162 = 248 219 182 656.
As a consequence, 498 216 is the square root of 248 219 182 656.
The multiples of 498 216 are all integers evenly divisible by 498 216, that is all numbers such that the remainder of the division by 498 216 is zero. There are infinitely many multiples of 498 216. The smallest multiples of 498 216 are: