It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 764 is not a prime number.
For example, 165 764 can be divided by 2: 165 764 / 2 = 82 882.
For 165 764 to be a prime number, it would have been required that 165 764 has only two divisors, i.e., itself and 1.
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165 764 is an even number, because it is evenly divisible by 2: 165 764 / 2 = 82 882.
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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 165 764 is about 407.141.
Thus, the square root of 165 764 is not an integer, and therefore 165 764 is not a square number.
The square of a number (here 165 764) is the result of the product of this number (165 764) by itself (i.e., 165 764 × 165 764); the square of 165 764 is sometimes called "raising 165 764 to the power 2", or "165 764 squared".
The square of 165 764 is 27 477 703 696 because 165 764 × 165 764 = 165 7642 = 27 477 703 696.
As a consequence, 165 764 is the square root of 27 477 703 696.
The multiples of 165 764 are all integers evenly divisible by 165 764, that is all numbers such that the remainder of the division by 165 764 is zero. There are infinitely many multiples of 165 764. The smallest multiples of 165 764 are: