It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 616 is not a prime number.
For example, 490 616 can be divided by 2: 490 616 / 2 = 245 308.
For 490 616 to be a prime number, it would have been required that 490 616 has only two divisors, i.e., itself and 1.
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490 616 is an even number, because it is evenly divisible by 2: 490 616 / 2 = 245 308.
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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 490 616 is about 700.440.
Thus, the square root of 490 616 is not an integer, and therefore 490 616 is not a square number.
The square of a number (here 490 616) is the result of the product of this number (490 616) by itself (i.e., 490 616 × 490 616); the square of 490 616 is sometimes called "raising 490 616 to the power 2", or "490 616 squared".
The square of 490 616 is 240 704 059 456 because 490 616 × 490 616 = 490 6162 = 240 704 059 456.
As a consequence, 490 616 is the square root of 240 704 059 456.
The multiples of 490 616 are all integers evenly divisible by 490 616, that is all numbers such that the remainder of the division by 490 616 is zero. There are infinitely many multiples of 490 616. The smallest multiples of 490 616 are: