11688081 has 4 divisors (see below), whose sum is σ = 15584112. Its totient is φ = 7792052.

The previous prime is 11688067. The next prime is 11688113. The reversal of 11688081 is 18088611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11688081 - 2⁷ = 11687953 is a prime.

It is a super-2 number, since 2×11688081² = 273222474925122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11688181) 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, 1948011 + ... + 1948016.

It is an arithmetic number, because the mean of its divisors is an integer number (3896028).

Almost surely, 2^11688081 is an apocalyptic number.

It is an amenable number.

11688081 is a deficient number, since it is larger than the sum of its proper divisors (3896031).

11688081 is an equidigital number, since it uses as much as digits as its factorization.

11688081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896030.

The product of its (nonzero) digits is 3072, while the sum is 33.

The square root of 11688081 is about 3418.7835555940. The cubic root of 11688081 is about 226.9417524741.

The spelling of 11688081 in words is "eleven million, six hundred eighty-eight thousand, eighty-one".