It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 264 209 is not a prime number.
For example, 264 209 can be divided by 11: 264 209 / 11 = 24 019.
For 264 209 to be a prime number, it would have been required that 264 209 has only two divisors, i.e., itself and 1.
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264 209 is an odd number, because it is not evenly divisible by 2.
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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 264 209 is about 514.013.
Thus, the square root of 264 209 is not an integer, and therefore 264 209 is not a square number.
The square of a number (here 264 209) is the result of the product of this number (264 209) by itself (i.e., 264 209 × 264 209); the square of 264 209 is sometimes called "raising 264 209 to the power 2", or "264 209 squared".
The square of 264 209 is 69 806 395 681 because 264 209 × 264 209 = 264 2092 = 69 806 395 681.
As a consequence, 264 209 is the square root of 69 806 395 681.
The multiples of 264 209 are all integers evenly divisible by 264 209, that is all numbers such that the remainder of the division by 264 209 is zero. There are infinitely many multiples of 264 209. The smallest multiples of 264 209 are: