11866536 has 48 divisors (see below), whose sum is σ = 35062560. Its totient is φ = 3595680.

The previous prime is 11866487. The next prime is 11866549. The reversal of 11866536 is 63566811.

It is a happy number.

11866536 is a `hidden beast` number, since 118 + 6 + 6 + 536 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11866536.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6700 + ... + 8283.

It is an arithmetic number, because the mean of its divisors is an integer number (730470).

Almost surely, 2^11866536 is an apocalyptic number.

It is an amenable number.

11866536 is an abundant number, since it is smaller than the sum of its proper divisors (23196024).

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

11866536 is a wasteful number, since it uses less digits than its factorization.

11866536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15006 (or 14999 counting only the distinct ones).

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

The square root of 11866536 is about 3444.7838829163. The cubic root of 11866536 is about 228.0909148048.

The spelling of 11866536 in words is "eleven million, eight hundred sixty-six thousand, five hundred thirty-six".