11511664 has 20 divisors (see below), whose sum is σ = 23024320. Its totient is φ = 5569920.

The previous prime is 11511623. The next prime is 11511679. The reversal of 11511664 is 46611511.

11511664 is an admirable number.

It is a congruent number.

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, 11109 + ... + 12100.

It is an arithmetic number, because the mean of its divisors is an integer number (1151216).

Almost surely, 2^11511664 is an apocalyptic number.

It is an amenable number.

11511664 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11511664 is a wasteful number, since it uses less digits than its factorization.

11511664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23248 (or 23242 counting only the distinct ones).

The product of its digits is 720, while the sum is 25.

The square root of 11511664 is about 3392.8843186882. The cubic root of 11511664 is about 225.7941582563.

The spelling of 11511664 in words is "eleven million, five hundred eleven thousand, six hundred sixty-four".