11637666 has 12 divisors (see below), whose sum is σ = 25214982. Its totient is φ = 3879216.

The previous prime is 11637643. The next prime is 11637677. The reversal of 11637666 is 66673611.

It can be written as a sum of positive squares in only one way, i.e., 5978025 + 5659641 = 2445^2 + 2379^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 11637666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 323251 + ... + 323286.

Almost surely, 2^11637666 is an apocalyptic number.

11637666 is an abundant number, since it is smaller than the sum of its proper divisors (13577316).

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

11637666 is a wasteful number, since it uses less digits than its factorization.

11637666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646545 (or 646542 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 11637666 is about 3411.4023509402. The cubic root of 11637666 is about 226.6149877378.

The spelling of 11637666 in words is "eleven million, six hundred thirty-seven thousand, six hundred sixty-six".