It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 324 is not a prime number.
For example, 165 324 can be divided by 2: 165 324 / 2 = 82 662.
For 165 324 to be a prime number, it would have been required that 165 324 has only two divisors, i.e., itself and 1.
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165 324 is an even number, because it is evenly divisible by 2: 165 324 / 2 = 82 662.
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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 165 324 is about 406.601.
Thus, the square root of 165 324 is not an integer, and therefore 165 324 is not a square number.
The square of a number (here 165 324) is the result of the product of this number (165 324) by itself (i.e., 165 324 × 165 324); the square of 165 324 is sometimes called "raising 165 324 to the power 2", or "165 324 squared".
The square of 165 324 is 27 332 024 976 because 165 324 × 165 324 = 165 3242 = 27 332 024 976.
As a consequence, 165 324 is the square root of 27 332 024 976.
The multiples of 165 324 are all integers evenly divisible by 165 324, that is all numbers such that the remainder of the division by 165 324 is zero. There are infinitely many multiples of 165 324. The smallest multiples of 165 324 are: