It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 264 374 is not a prime number.
For example, 264 374 can be divided by 2: 264 374 / 2 = 132 187.
For 264 374 to be a prime number, it would have been required that 264 374 has only two divisors, i.e., itself and 1.
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264 374 is an even number, because it is evenly divisible by 2: 264 374 / 2 = 132 187.
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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 264 374 is about 514.173.
Thus, the square root of 264 374 is not an integer, and therefore 264 374 is not a square number.
The square of a number (here 264 374) is the result of the product of this number (264 374) by itself (i.e., 264 374 × 264 374); the square of 264 374 is sometimes called "raising 264 374 to the power 2", or "264 374 squared".
The square of 264 374 is 69 893 611 876 because 264 374 × 264 374 = 264 3742 = 69 893 611 876.
As a consequence, 264 374 is the square root of 69 893 611 876.
The multiples of 264 374 are all integers evenly divisible by 264 374, that is all numbers such that the remainder of the division by 264 374 is zero. There are infinitely many multiples of 264 374. The smallest multiples of 264 374 are: