It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 267 274 is not a prime number.
For example, 267 274 can be divided by 2: 267 274 / 2 = 133 637.
For 267 274 to be a prime number, it would have been required that 267 274 has only two divisors, i.e., itself and 1.
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267 274 is an even number, because it is evenly divisible by 2: 267 274 / 2 = 133 637.
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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 267 274 is about 516.985.
Thus, the square root of 267 274 is not an integer, and therefore 267 274 is not a square number.
The square of a number (here 267 274) is the result of the product of this number (267 274) by itself (i.e., 267 274 × 267 274); the square of 267 274 is sometimes called "raising 267 274 to the power 2", or "267 274 squared".
The square of 267 274 is 71 435 391 076 because 267 274 × 267 274 = 267 2742 = 71 435 391 076.
As a consequence, 267 274 is the square root of 71 435 391 076.
The multiples of 267 274 are all integers evenly divisible by 267 274, that is all numbers such that the remainder of the division by 267 274 is zero. There are infinitely many multiples of 267 274. The smallest multiples of 267 274 are: