It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 622 is not a prime number.
For example, 397 622 can be divided by 2: 397 622 / 2 = 198 811.
For 397 622 to be a prime number, it would have been required that 397 622 has only two divisors, i.e., itself and 1.
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397 622 is an even number, because it is evenly divisible by 2: 397 622 / 2 = 198 811.
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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 397 622 is about 630.573.
Thus, the square root of 397 622 is not an integer, and therefore 397 622 is not a square number.
The square of a number (here 397 622) is the result of the product of this number (397 622) by itself (i.e., 397 622 × 397 622); the square of 397 622 is sometimes called "raising 397 622 to the power 2", or "397 622 squared".
The square of 397 622 is 158 103 254 884 because 397 622 × 397 622 = 397 6222 = 158 103 254 884.
As a consequence, 397 622 is the square root of 158 103 254 884.
The multiples of 397 622 are all integers evenly divisible by 397 622, that is all numbers such that the remainder of the division by 397 622 is zero. There are infinitely many multiples of 397 622. The smallest multiples of 397 622 are: