11666808 has 32 divisors (see below), whose sum is σ = 32408400. Its totient is φ = 3888864.

The previous prime is 11666807. The next prime is 11666833. The reversal of 11666808 is 80866611.

It is a super-2 number, since 2×11666808² = 272228817817728, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666801) 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, 26791 + ... + 27222.

Almost surely, 2^11666808 is an apocalyptic number.

11666808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11666808 is an abundant number, since it is smaller than the sum of its proper divisors (20741592).

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

11666808 is a wasteful number, since it uses less digits than its factorization.

11666808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54028 (or 54018 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 11666808 is about 3415.6709443388. The cubic root of 11666808 is about 226.8039863805.

The spelling of 11666808 in words is "eleven million, six hundred sixty-six thousand, eight hundred eight".