It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 584 is not a prime number.
For example, 165 584 can be divided by 2: 165 584 / 2 = 82 792.
For 165 584 to be a prime number, it would have been required that 165 584 has only two divisors, i.e., itself and 1.
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165 584 is an even number, because it is evenly divisible by 2: 165 584 / 2 = 82 792.
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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 165 584 is about 406.920.
Thus, the square root of 165 584 is not an integer, and therefore 165 584 is not a square number.
The square of a number (here 165 584) is the result of the product of this number (165 584) by itself (i.e., 165 584 × 165 584); the square of 165 584 is sometimes called "raising 165 584 to the power 2", or "165 584 squared".
The square of 165 584 is 27 418 061 056 because 165 584 × 165 584 = 165 5842 = 27 418 061 056.
As a consequence, 165 584 is the square root of 27 418 061 056.
The multiples of 165 584 are all integers evenly divisible by 165 584, that is all numbers such that the remainder of the division by 165 584 is zero. There are infinitely many multiples of 165 584. The smallest multiples of 165 584 are: