11685987 has 12 divisors (see below), whose sum is σ = 17872920. Its totient is φ = 7332288.

The previous prime is 11685983. The next prime is 11685991. The reversal of 11685987 is 78958611.

11685987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11685983) and next prime (11685991).

It is not a de Polignac number, because 11685987 - 2² = 11685983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11685983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38037 + ... + 38342.

It is an arithmetic number, because the mean of its divisors is an integer number (1489410).

Almost surely, 2^11685987 is an apocalyptic number.

11685987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11685987 is a deficient number, since it is larger than the sum of its proper divisors (6186933).

11685987 is a wasteful number, since it uses less digits than its factorization.

11685987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76402 (or 76399 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 11685987 is about 3418.4772925968. The cubic root of 11685987 is about 226.9281989401.

The spelling of 11685987 in words is "eleven million, six hundred eighty-five thousand, nine hundred eighty-seven".