It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 167 664 is not a prime number.
For example, 167 664 can be divided by 2: 167 664 / 2 = 83 832.
For 167 664 to be a prime number, it would have been required that 167 664 has only two divisors, i.e., itself and 1.
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167 664 is an even number, because it is evenly divisible by 2: 167 664 / 2 = 83 832.
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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 167 664 is about 409.468.
Thus, the square root of 167 664 is not an integer, and therefore 167 664 is not a square number.
The square of a number (here 167 664) is the result of the product of this number (167 664) by itself (i.e., 167 664 × 167 664); the square of 167 664 is sometimes called "raising 167 664 to the power 2", or "167 664 squared".
The square of 167 664 is 28 111 216 896 because 167 664 × 167 664 = 167 6642 = 28 111 216 896.
As a consequence, 167 664 is the square root of 28 111 216 896.
The multiples of 167 664 are all integers evenly divisible by 167 664, that is all numbers such that the remainder of the division by 167 664 is zero. There are infinitely many multiples of 167 664. The smallest multiples of 167 664 are: