It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 495 616 is not a prime number.
For example, 495 616 can be divided by 2: 495 616 / 2 = 247 808.
For 495 616 to be a prime number, it would have been required that 495 616 has only two divisors, i.e., itself and 1.
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495 616 is an even number, because it is evenly divisible by 2: 495 616 / 2 = 247 808.
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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 495 616 is 704.
Therefore, the square root of 495 616 is an integer, and as a consequence 495 616 is a perfect square.
The square of a number (here 495 616) is the result of the product of this number (495 616) by itself (i.e., 495 616 × 495 616); the square of 495 616 is sometimes called "raising 495 616 to the power 2", or "495 616 squared".
The square of 495 616 is 245 635 219 456 because 495 616 × 495 616 = 495 6162 = 245 635 219 456.
As a consequence, 495 616 is the square root of 245 635 219 456.
The multiples of 495 616 are all integers evenly divisible by 495 616, that is all numbers such that the remainder of the division by 495 616 is zero. There are infinitely many multiples of 495 616. The smallest multiples of 495 616 are: