It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 13 667 is not a prime number.
For example, 13 667 can be divided by 79: 13 667 / 79 = 173.
For 13 667 to be a prime number, it would have been required that 13 667 has only two divisors, i.e., itself and 1.
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13 667 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 13 667 is about 116.906.
Thus, the square root of 13 667 is not an integer, and therefore 13 667 is not a square number.
The square of a number (here 13 667) is the result of the product of this number (13 667) by itself (i.e., 13 667 × 13 667); the square of 13 667 is sometimes called "raising 13 667 to the power 2", or "13 667 squared".
The square of 13 667 is 186 786 889 because 13 667 × 13 667 = 13 6672 = 186 786 889.
As a consequence, 13 667 is the square root of 186 786 889.
The multiples of 13 667 are all integers evenly divisible by 13 667, that is all numbers such that the remainder of the division by 13 667 is zero. There are infinitely many multiples of 13 667. The smallest multiples of 13 667 are: