11685081 has 24 divisors (see below), whose sum is σ = 16811200. Its totient is φ = 7213536.

The previous prime is 11685073. The next prime is 11685097. The reversal of 11685081 is 18058611.

It is a happy number.

11685081 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11685081 - 2³ = 11685073 is a prime.

It is a super-2 number, since 2×11685081² = 273082235953122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11685031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58620 + ... + 58818.

Almost surely, 2^11685081 is an apocalyptic number.

It is an amenable number.

11685081 is a deficient number, since it is larger than the sum of its proper divisors (5126119).

11685081 is a wasteful number, since it uses less digits than its factorization.

11685081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 11685081 is about 3418.3447748874. The cubic root of 11685081 is about 226.9223343017.

The spelling of 11685081 in words is "eleven million, six hundred eighty-five thousand, eighty-one".