It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 364 is not a prime number.
For example, 165 364 can be divided by 2: 165 364 / 2 = 82 682.
For 165 364 to be a prime number, it would have been required that 165 364 has only two divisors, i.e., itself and 1.
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165 364 is an even number, because it is evenly divisible by 2: 165 364 / 2 = 82 682.
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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 165 364 is about 406.650.
Thus, the square root of 165 364 is not an integer, and therefore 165 364 is not a square number.
The square of a number (here 165 364) is the result of the product of this number (165 364) by itself (i.e., 165 364 × 165 364); the square of 165 364 is sometimes called "raising 165 364 to the power 2", or "165 364 squared".
The square of 165 364 is 27 345 252 496 because 165 364 × 165 364 = 165 3642 = 27 345 252 496.
As a consequence, 165 364 is the square root of 27 345 252 496.
The multiples of 165 364 are all integers evenly divisible by 165 364, that is all numbers such that the remainder of the division by 165 364 is zero. There are infinitely many multiples of 165 364. The smallest multiples of 165 364 are: