11391664 has 20 divisors (see below), whose sum is σ = 22833360. Its totient is φ = 5499200.

The previous prime is 11391641. The next prime is 11391673. The reversal of 11391664 is 46619311.

11391664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11812 + ... + 12739.

It is an arithmetic number, because the mean of its divisors is an integer number (1141668).

Almost surely, 2^11391664 is an apocalyptic number.

It is an amenable number.

11391664 is an abundant number, since it is smaller than the sum of its proper divisors (11441696).

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

11391664 is a wasteful number, since it uses less digits than its factorization.

11391664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24588 (or 24582 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 11391664 is about 3375.1539224160. The cubic root of 11391664 is about 225.0068409443.

The spelling of 11391664 in words is "eleven million, three hundred ninety-one thousand, six hundred sixty-four".