It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 264 144 is not a prime number.
For example, 264 144 can be divided by 2: 264 144 / 2 = 132 072.
For 264 144 to be a prime number, it would have been required that 264 144 has only two divisors, i.e., itself and 1.
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264 144 is an even number, because it is evenly divisible by 2: 264 144 / 2 = 132 072.
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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 264 144 is about 513.949.
Thus, the square root of 264 144 is not an integer, and therefore 264 144 is not a square number.
The square of a number (here 264 144) is the result of the product of this number (264 144) by itself (i.e., 264 144 × 264 144); the square of 264 144 is sometimes called "raising 264 144 to the power 2", or "264 144 squared".
The square of 264 144 is 69 772 052 736 because 264 144 × 264 144 = 264 1442 = 69 772 052 736.
As a consequence, 264 144 is the square root of 69 772 052 736.
The multiples of 264 144 are all integers evenly divisible by 264 144, that is all numbers such that the remainder of the division by 264 144 is zero. There are infinitely many multiples of 264 144. The smallest multiples of 264 144 are: