Subtracting from 17623 its product of digits (252), we obtain a palindrome (17371).
17623 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It is a cyclic number.
It is an Ulam number.
It is a self number, because there is not a number n which added to its sum of digits gives 17623.
It is a congruent number.
217623 is an apocalyptic number.
17623 is an equidigital number, since it uses as much as digits as its factorization.
17623 is an evil number, because the sum of its binary digits is even.
The square root of 17623 is about 132.7516478240. The cubic root of 17623 is about 26.0231549151.
The spelling of 17623 in words is "seventeen thousand, six hundred twenty-three".