11685678 has 16 divisors (see below), whose sum is σ = 23491200. Its totient is φ = 3875256.

The previous prime is 11685643. The next prime is 11685721. The reversal of 11685678 is 87658611.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3700 + ... + 6087.

It is an arithmetic number, because the mean of its divisors is an integer number (1468200).

Almost surely, 2^11685678 is an apocalyptic number.

11685678 is an abundant number, since it is smaller than the sum of its proper divisors (11805522).

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

11685678 is a wasteful number, since it uses less digits than its factorization.

11685678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9991.

The product of its digits is 80640, while the sum is 42.

The square root of 11685678 is about 3418.4320967367. The cubic root of 11685678 is about 226.9261987829.

The spelling of 11685678 in words is "eleven million, six hundred eighty-five thousand, six hundred seventy-eight".