It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 264 647 824 is not a prime number.
For example, 264 647 824 can be divided by 2: 264 647 824 / 2 = 132 323 912.
For 264 647 824 to be a prime number, it would have been required that 264 647 824 has only two divisors, i.e., itself and 1.
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264 647 824 is an even number, because it is evenly divisible by 2: 264 647 824 / 2 = 132 323 912.
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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 264 647 824 is 16 268.
Therefore, the square root of 264 647 824 is an integer, and as a consequence 264 647 824 is a perfect square.
As a consequence, 16 268 is the square root of 264 647 824.
The square of a number (here 264 647 824) is the result of the product of this number (264 647 824) by itself (i.e., 264 647 824 × 264 647 824); the square of 264 647 824 is sometimes called "raising 264 647 824 to the power 2", or "264 647 824 squared".
The square of 264 647 824 is 70 038 470 747 934 976 because 264 647 824 × 264 647 824 = 264 647 8242 = 70 038 470 747 934 976.
As a consequence, 264 647 824 is the square root of 70 038 470 747 934 976.
264 647 824 is a number with 9 digits.
The multiples of 264 647 824 are all integers evenly divisible by 264 647 824, that is all numbers such that the remainder of the division by 264 647 824 is zero. There are infinitely many multiples of 264 647 824. The smallest multiples of 264 647 824 are: