11865616 has 20 divisors (see below), whose sum is σ = 26274112. Its totient is φ = 5085216.

The previous prime is 11865613. The next prime is 11865617. The reversal of 11865616 is 61656811.

It is not an unprimeable number, because it can be changed into a prime (11865613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52860 + ... + 53083.

Almost surely, 2^11865616 is an apocalyptic number.

11865616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11865616 is an abundant number, since it is smaller than the sum of its proper divisors (14408496).

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

11865616 is a wasteful number, since it uses less digits than its factorization.

11865616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105958 (or 105952 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 11865616 is about 3444.6503451004. The cubic root of 11865616 is about 228.0850201033.

The spelling of 11865616 in words is "eleven million, eight hundred sixty-five thousand, six hundred sixteen".