11688911 has 16 divisors (see below), whose sum is σ = 13444704. Its totient is φ = 10066944.

The previous prime is 11688907. The next prime is 11688913. The reversal of 11688911 is 11988611.

It is a cyclic number.

It is not a de Polignac number, because 11688911 - 2² = 11688907 is a prime.

11688911 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11688913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50051 + ... + 50283.

It is an arithmetic number, because the mean of its divisors is an integer number (840294).

Almost surely, 2^11688911 is an apocalyptic number.

11688911 is a deficient number, since it is larger than the sum of its proper divisors (1755793).

11688911 is a wasteful number, since it uses less digits than its factorization.

11688911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490.

The product of its digits is 3456, while the sum is 35.

The square root of 11688911 is about 3418.9049416443. The cubic root of 11688911 is about 226.9471242483.

The spelling of 11688911 in words is "eleven million, six hundred eighty-eight thousand, nine hundred eleven".