It is a happy number.
3616 is nontrivially palindromic in base 15.
It is an alternating number because its digits alternate between odd and even.
3616 is a nontrivial repdigit in base 15.
It is a plaindrome in base 15.
It is a nialpdrome in base 15 and base 16.
It is a zygodrome in base 15.
It is a self number, because there is not a number n which added to its sum of digits gives 3616.
It is a congruent number.
23616 is an apocalyptic number.
It is an amenable number.
3616 is a wasteful number, since it uses less digits than its factorization.
3616 is an evil number, because the sum of its binary digits is even.
The square root of 3616 is about 60.1331855135. The cubic root of 3616 is about 15.3488605576.
Subtracting from 3616 its sum of digits (16), we obtain a square (3600 = 602).
Adding to 3616 its reverse (6163), we get a palindrome (9779).
The spelling of 3616 in words is "three thousand, six hundred sixteen".