It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 267 996 is not a prime number.
For example, 267 996 can be divided by 2: 267 996 / 2 = 133 998.
For 267 996 to be a prime number, it would have been required that 267 996 has only two divisors, i.e., itself and 1.
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267 996 is an even number, because it is evenly divisible by 2: 267 996 / 2 = 133 998.
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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 267 996 is about 517.683.
Thus, the square root of 267 996 is not an integer, and therefore 267 996 is not a square number.
The square of a number (here 267 996) is the result of the product of this number (267 996) by itself (i.e., 267 996 × 267 996); the square of 267 996 is sometimes called "raising 267 996 to the power 2", or "267 996 squared".
The square of 267 996 is 71 821 856 016 because 267 996 × 267 996 = 267 9962 = 71 821 856 016.
As a consequence, 267 996 is the square root of 71 821 856 016.
The multiples of 267 996 are all integers evenly divisible by 267 996, that is all numbers such that the remainder of the division by 267 996 is zero. There are infinitely many multiples of 267 996. The smallest multiples of 267 996 are: