It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 264 352 644 is not a prime number.
For example, 264 352 644 can be divided by 2: 264 352 644 / 2 = 132 176 322.
For 264 352 644 to be a prime number, it would have been required that 264 352 644 has only two divisors, i.e., itself and 1.
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264 352 644 is an even number, because it is evenly divisible by 2: 264 352 644 / 2 = 132 176 322.
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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 264 352 644 is about 16 258.925.
Thus, the square root of 264 352 644 is not an integer, and therefore 264 352 644 is not a square number.
The square of a number (here 264 352 644) is the result of the product of this number (264 352 644) by itself (i.e., 264 352 644 × 264 352 644); the square of 264 352 644 is sometimes called "raising 264 352 644 to the power 2", or "264 352 644 squared".
The square of 264 352 644 is 69 882 320 389 790 736 because 264 352 644 × 264 352 644 = 264 352 6442 = 69 882 320 389 790 736.
As a consequence, 264 352 644 is the square root of 69 882 320 389 790 736.
264 352 644 is a number with 9 digits.
The multiples of 264 352 644 are all integers evenly divisible by 264 352 644, that is all numbers such that the remainder of the division by 264 352 644 is zero. There are infinitely many multiples of 264 352 644. The smallest multiples of 264 352 644 are: