It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 15 674 is not a prime number.
For example, 15 674 can be divided by 2: 15 674 / 2 = 7 837.
For 15 674 to be a prime number, it would have been required that 15 674 has only two divisors, i.e., itself and 1.
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15 674 is an even number, because it is evenly divisible by 2: 15 674 / 2 = 7 837.
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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 15 674 is about 125.196.
Thus, the square root of 15 674 is not an integer, and therefore 15 674 is not a square number.
The square of a number (here 15 674) is the result of the product of this number (15 674) by itself (i.e., 15 674 × 15 674); the square of 15 674 is sometimes called "raising 15 674 to the power 2", or "15 674 squared".
The square of 15 674 is 245 674 276 because 15 674 × 15 674 = 15 6742 = 245 674 276.
As a consequence, 15 674 is the square root of 245 674 276.
The multiples of 15 674 are all integers evenly divisible by 15 674, that is all numbers such that the remainder of the division by 15 674 is zero. There are infinitely many multiples of 15 674. The smallest multiples of 15 674 are: