11687864 has 16 divisors (see below), whose sum is σ = 22867920. Its totient is φ = 5589760.

The previous prime is 11687861. The next prime is 11687903. The reversal of 11687864 is 46878611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11687861) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 31577 + ... + 31944.

It is an arithmetic number, because the mean of its divisors is an integer number (1429245).

Almost surely, 2^11687864 is an apocalyptic number.

It is an amenable number.

11687864 is a deficient number, since it is larger than the sum of its proper divisors (11180056).

11687864 is a wasteful number, since it uses less digits than its factorization.

11687864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63550 (or 63546 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 11687864 is about 3418.7518190123. The cubic root of 11687864 is about 226.9403480045.

The spelling of 11687864 in words is "eleven million, six hundred eighty-seven thousand, eight hundred sixty-four".