It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 264 664 is not a prime number.
For example, 264 664 can be divided by 2: 264 664 / 2 = 132 332.
For 264 664 to be a prime number, it would have been required that 264 664 has only two divisors, i.e., itself and 1.
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264 664 is an even number, because it is evenly divisible by 2: 264 664 / 2 = 132 332.
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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 264 664 is about 514.455.
Thus, the square root of 264 664 is not an integer, and therefore 264 664 is not a square number.
The square of a number (here 264 664) is the result of the product of this number (264 664) by itself (i.e., 264 664 × 264 664); the square of 264 664 is sometimes called "raising 264 664 to the power 2", or "264 664 squared".
The square of 264 664 is 70 047 032 896 because 264 664 × 264 664 = 264 6642 = 70 047 032 896.
As a consequence, 264 664 is the square root of 70 047 032 896.
The multiples of 264 664 are all integers evenly divisible by 264 664, that is all numbers such that the remainder of the division by 264 664 is zero. There are infinitely many multiples of 264 664. The smallest multiples of 264 664 are: