It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 164 804 is not a prime number.
For example, 164 804 can be divided by 2: 164 804 / 2 = 82 402.
For 164 804 to be a prime number, it would have been required that 164 804 has only two divisors, i.e., itself and 1.
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164 804 is an even number, because it is evenly divisible by 2: 164 804 / 2 = 82 402.
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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 164 804 is about 405.961.
Thus, the square root of 164 804 is not an integer, and therefore 164 804 is not a square number.
The square of a number (here 164 804) is the result of the product of this number (164 804) by itself (i.e., 164 804 × 164 804); the square of 164 804 is sometimes called "raising 164 804 to the power 2", or "164 804 squared".
The square of 164 804 is 27 160 358 416 because 164 804 × 164 804 = 164 8042 = 27 160 358 416.
As a consequence, 164 804 is the square root of 27 160 358 416.
The multiples of 164 804 are all integers evenly divisible by 164 804, that is all numbers such that the remainder of the division by 164 804 is zero. There are infinitely many multiples of 164 804. The smallest multiples of 164 804 are: