It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 662 is not a prime number.
For example, 397 662 can be divided by 2: 397 662 / 2 = 198 831.
For 397 662 to be a prime number, it would have been required that 397 662 has only two divisors, i.e., itself and 1.
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397 662 is an even number, because it is evenly divisible by 2: 397 662 / 2 = 198 831.
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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 397 662 is about 630.604.
Thus, the square root of 397 662 is not an integer, and therefore 397 662 is not a square number.
The square of a number (here 397 662) is the result of the product of this number (397 662) by itself (i.e., 397 662 × 397 662); the square of 397 662 is sometimes called "raising 397 662 to the power 2", or "397 662 squared".
The square of 397 662 is 158 135 066 244 because 397 662 × 397 662 = 397 6622 = 158 135 066 244.
As a consequence, 397 662 is the square root of 158 135 066 244.
The multiples of 397 662 are all integers evenly divisible by 397 662, that is all numbers such that the remainder of the division by 397 662 is zero. There are infinitely many multiples of 397 662. The smallest multiples of 397 662 are: