Adding to 2645 its sum of digits (17), we get a palindrome (2662).
Subtracting from 2645 its sum of digits (17), we obtain a triangular number (2628 = T72).
2645 is nontrivially palindromic in base 14.
2645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a magnanimous number.
It is a d-powerful number, because it can be written as 211 + 44 + 63 + 53 .
It is a Duffinian number.
2645 is an undulating number in base 14.
It is a plaindrome in base 9.
It is a nialpdrome in base 4, base 15 and base 16.
It is a zygodrome in base 4.
It is a congruent number.
It is an amenable number.
2645 is an equidigital number, since it uses as much as digits as its factorization.
2645 is an evil number, because the sum of its binary digits is even.
The square root of 2645 is about 51.4295634825. The cubic root of 2645 is about 13.8295662393.
The spelling of 2645 in words is "two thousand, six hundred forty-five".