It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 622 is not a prime number.
For example, 490 622 can be divided by 2: 490 622 / 2 = 245 311.
For 490 622 to be a prime number, it would have been required that 490 622 has only two divisors, i.e., itself and 1.
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490 622 is an even number, because it is evenly divisible by 2: 490 622 / 2 = 245 311.
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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 490 622 is about 700.444.
Thus, the square root of 490 622 is not an integer, and therefore 490 622 is not a square number.
The square of a number (here 490 622) is the result of the product of this number (490 622) by itself (i.e., 490 622 × 490 622); the square of 490 622 is sometimes called "raising 490 622 to the power 2", or "490 622 squared".
The square of 490 622 is 240 709 946 884 because 490 622 × 490 622 = 490 6222 = 240 709 946 884.
As a consequence, 490 622 is the square root of 240 709 946 884.
The multiples of 490 622 are all integers evenly divisible by 490 622, that is all numbers such that the remainder of the division by 490 622 is zero. There are infinitely many multiples of 490 622. The smallest multiples of 490 622 are: