It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 15 664 is not a prime number.
For example, 15 664 can be divided by 2: 15 664 / 2 = 7 832.
For 15 664 to be a prime number, it would have been required that 15 664 has only two divisors, i.e., itself and 1.
Find out more:
15 664 is an even number, because it is evenly divisible by 2: 15 664 / 2 = 7 832.
Find out more:
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 15 664 is about 125.156.
Thus, the square root of 15 664 is not an integer, and therefore 15 664 is not a square number.
The square of a number (here 15 664) is the result of the product of this number (15 664) by itself (i.e., 15 664 × 15 664); the square of 15 664 is sometimes called "raising 15 664 to the power 2", or "15 664 squared".
The square of 15 664 is 245 360 896 because 15 664 × 15 664 = 15 6642 = 245 360 896.
As a consequence, 15 664 is the square root of 245 360 896.
The multiples of 15 664 are all integers evenly divisible by 15 664, that is all numbers such that the remainder of the division by 15 664 is zero. There are infinitely many multiples of 15 664. The smallest multiples of 15 664 are: