It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 267 789 216 is not a prime number.
For example, 267 789 216 can be divided by 2: 267 789 216 / 2 = 133 894 608.
For 267 789 216 to be a prime number, it would have been required that 267 789 216 has only two divisors, i.e., itself and 1.
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267 789 216 is an even number, because it is evenly divisible by 2: 267 789 216 / 2 = 133 894 608.
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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 267 789 216 is about 16 364.266.
Thus, the square root of 267 789 216 is not an integer, and therefore 267 789 216 is not a square number.
The square of a number (here 267 789 216) is the result of the product of this number (267 789 216) by itself (i.e., 267 789 216 × 267 789 216); the square of 267 789 216 is sometimes called "raising 267 789 216 to the power 2", or "267 789 216 squared".
The square of 267 789 216 is 71 711 064 205 894 656 because 267 789 216 × 267 789 216 = 267 789 2162 = 71 711 064 205 894 656.
As a consequence, 267 789 216 is the square root of 71 711 064 205 894 656.
267 789 216 is a number with 9 digits.
The multiples of 267 789 216 are all integers evenly divisible by 267 789 216, that is all numbers such that the remainder of the division by 267 789 216 is zero. There are infinitely many multiples of 267 789 216. The smallest multiples of 267 789 216 are: