13856616 has 32 divisors (see below), whose sum is σ = 38491200. Its totient is φ = 4618800.

The previous prime is 13856593. The next prime is 13856617. The reversal of 13856616 is 61665831.

It is a happy number.

13856616 is a `hidden beast` number, since 1 + 38 + 5 + 6 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (13856617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31860 + ... + 32291.

It is an arithmetic number, because the mean of its divisors is an integer number (1202850).

Almost surely, 2^13856616 is an apocalyptic number.

It is an amenable number.

13856616 is an abundant number, since it is smaller than the sum of its proper divisors (24634584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13856616 is a wasteful number, since it uses less digits than its factorization.

13856616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64166 (or 64156 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 13856616 is about 3722.4475819009. The cubic root of 13856616 is about 240.1886017503.

It can be divided in two parts, 1385 and 6616, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 13856616 in words is "thirteen million, eight hundred fifty-six thousand, six hundred sixteen".