It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 240 564 is not a prime number.
For example, 240 564 can be divided by 2: 240 564 / 2 = 120 282.
For 240 564 to be a prime number, it would have been required that 240 564 has only two divisors, i.e., itself and 1.
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240 564 is an even number, because it is evenly divisible by 2: 240 564 / 2 = 120 282.
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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 240 564 is about 490.473.
Thus, the square root of 240 564 is not an integer, and therefore 240 564 is not a square number.
The square of a number (here 240 564) is the result of the product of this number (240 564) by itself (i.e., 240 564 × 240 564); the square of 240 564 is sometimes called "raising 240 564 to the power 2", or "240 564 squared".
The square of 240 564 is 57 871 038 096 because 240 564 × 240 564 = 240 5642 = 57 871 038 096.
As a consequence, 240 564 is the square root of 57 871 038 096.
The multiples of 240 564 are all integers evenly divisible by 240 564, that is all numbers such that the remainder of the division by 240 564 is zero. There are infinitely many multiples of 240 564. The smallest multiples of 240 564 are: