It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 264 424 is not a prime number.
For example, 264 424 can be divided by 2: 264 424 / 2 = 132 212.
For 264 424 to be a prime number, it would have been required that 264 424 has only two divisors, i.e., itself and 1.
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264 424 is an even number, because it is evenly divisible by 2: 264 424 / 2 = 132 212.
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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 264 424 is about 514.222.
Thus, the square root of 264 424 is not an integer, and therefore 264 424 is not a square number.
The square of a number (here 264 424) is the result of the product of this number (264 424) by itself (i.e., 264 424 × 264 424); the square of 264 424 is sometimes called "raising 264 424 to the power 2", or "264 424 squared".
The square of 264 424 is 69 920 051 776 because 264 424 × 264 424 = 264 4242 = 69 920 051 776.
As a consequence, 264 424 is the square root of 69 920 051 776.
The multiples of 264 424 are all integers evenly divisible by 264 424, that is all numbers such that the remainder of the division by 264 424 is zero. There are infinitely many multiples of 264 424. The smallest multiples of 264 424 are: