11685865 has 8 divisors (see below), whose sum is σ = 14159808. Its totient is φ = 9257520.

The previous prime is 11685859. The next prime is 11685871. The reversal of 11685865 is 56858611.

It is an interprime number because it is at equal distance from previous prime (11685859) and next prime (11685871).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11685865 - 2³ = 11685857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10831 + ... + 11860.

It is an arithmetic number, because the mean of its divisors is an integer number (1769976).

Almost surely, 2^11685865 is an apocalyptic number.

It is an amenable number.

11685865 is a deficient number, since it is larger than the sum of its proper divisors (2473943).

11685865 is a wasteful number, since it uses less digits than its factorization.

11685865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22799.

The product of its digits is 57600, while the sum is 40.

The square root of 11685865 is about 3418.4594483480. The cubic root of 11685865 is about 226.9274092382.

The spelling of 11685865 in words is "eleven million, six hundred eighty-five thousand, eight hundred sixty-five".