Subtracting from 11689 its sum of digits (25), we obtain a square (11664 = 1082).
Adding to 11689 its product of digits (432), we get a palindrome (12121).
11689 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It is a cyclic number.
It is a plaindrome in base 10.
It is a nialpdrome in base 13.
211689 is an apocalyptic number.
It is an amenable number.
11689 is an equidigital number, since it uses as much as digits as its factorization.
11689 is an evil number, because the sum of its binary digits is even.
The square root of 11689 is about 108.1156787890. The cubic root of 11689 is about 22.6947700243.
The spelling of 11689 in words is "eleven thousand, six hundred eighty-nine".