It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 264 362 021 is not a prime number.
For example, 264 362 021 can be divided by 7: 264 362 021 / 7 = 37 766 003.
For 264 362 021 to be a prime number, it would have been required that 264 362 021 has only two divisors, i.e., itself and 1.
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264 362 021 is an odd number, because it is not evenly divisible by 2.
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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 264 362 021 is about 16 259.213.
Thus, the square root of 264 362 021 is not an integer, and therefore 264 362 021 is not a square number.
The square of a number (here 264 362 021) is the result of the product of this number (264 362 021) by itself (i.e., 264 362 021 × 264 362 021); the square of 264 362 021 is sometimes called "raising 264 362 021 to the power 2", or "264 362 021 squared".
The square of 264 362 021 is 69 887 278 147 204 440 because 264 362 021 × 264 362 021 = 264 362 0212 = 69 887 278 147 204 440.
As a consequence, 264 362 021 is the square root of 69 887 278 147 204 440.
264 362 021 is a number with 9 digits.
The multiples of 264 362 021 are all integers evenly divisible by 264 362 021, that is all numbers such that the remainder of the division by 264 362 021 is zero. There are infinitely many multiples of 264 362 021. The smallest multiples of 264 362 021 are: