It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 267 616 is not a prime number.
For example, 267 616 can be divided by 2: 267 616 / 2 = 133 808.
For 267 616 to be a prime number, it would have been required that 267 616 has only two divisors, i.e., itself and 1.
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267 616 is an even number, because it is evenly divisible by 2: 267 616 / 2 = 133 808.
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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 267 616 is about 517.316.
Thus, the square root of 267 616 is not an integer, and therefore 267 616 is not a square number.
The square of a number (here 267 616) is the result of the product of this number (267 616) by itself (i.e., 267 616 × 267 616); the square of 267 616 is sometimes called "raising 267 616 to the power 2", or "267 616 squared".
The square of 267 616 is 71 618 323 456 because 267 616 × 267 616 = 267 6162 = 71 618 323 456.
As a consequence, 267 616 is the square root of 71 618 323 456.
The multiples of 267 616 are all integers evenly divisible by 267 616, that is all numbers such that the remainder of the division by 267 616 is zero. There are infinitely many multiples of 267 616. The smallest multiples of 267 616 are: