It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 264 628 738 is not a prime number.
For example, 264 628 738 can be divided by 2: 264 628 738 / 2 = 132 314 369.
For 264 628 738 to be a prime number, it would have been required that 264 628 738 has only two divisors, i.e., itself and 1.
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264 628 738 is an even number, because it is evenly divisible by 2: 264 628 738 / 2 = 132 314 369.
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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 264 628 738 is about 16 267.413.
Thus, the square root of 264 628 738 is not an integer, and therefore 264 628 738 is not a square number.
The square of a number (here 264 628 738) is the result of the product of this number (264 628 738) by itself (i.e., 264 628 738 × 264 628 738); the square of 264 628 738 is sometimes called "raising 264 628 738 to the power 2", or "264 628 738 squared".
The square of 264 628 738 is 70 028 368 975 472 640 because 264 628 738 × 264 628 738 = 264 628 7382 = 70 028 368 975 472 640.
As a consequence, 264 628 738 is the square root of 70 028 368 975 472 640.
264 628 738 is a number with 9 digits.
The multiples of 264 628 738 are all integers evenly divisible by 264 628 738, that is all numbers such that the remainder of the division by 264 628 738 is zero. There are infinitely many multiples of 264 628 738. The smallest multiples of 264 628 738 are: