It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 667 is not a prime number.
For example, 490 667 can be divided by 239: 490 667 / 239 = 2 053.
For 490 667 to be a prime number, it would have been required that 490 667 has only two divisors, i.e., itself and 1.
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490 667 is an odd number, because it is not evenly divisible by 2.
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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 490 667 is about 700.476.
Thus, the square root of 490 667 is not an integer, and therefore 490 667 is not a square number.
The square of a number (here 490 667) is the result of the product of this number (490 667) by itself (i.e., 490 667 × 490 667); the square of 490 667 is sometimes called "raising 490 667 to the power 2", or "490 667 squared".
The square of 490 667 is 240 754 104 889 because 490 667 × 490 667 = 490 6672 = 240 754 104 889.
As a consequence, 490 667 is the square root of 240 754 104 889.
The multiples of 490 667 are all integers evenly divisible by 490 667, that is all numbers such that the remainder of the division by 490 667 is zero. There are infinitely many multiples of 490 667. The smallest multiples of 490 667 are: