11543664 has 40 divisors (see below), whose sum is σ = 32533632. Its totient is φ = 3497920.

The previous prime is 11543657. The next prime is 11543681. The reversal of 11543664 is 46634511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10404 + ... + 11459.

Almost surely, 2^11543664 is an apocalyptic number.

It is an amenable number.

11543664 is an abundant number, since it is smaller than the sum of its proper divisors (20989968).

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

11543664 is a wasteful number, since it uses less digits than its factorization.

11543664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21885 (or 21879 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 11543664 is about 3397.5967977381. The cubic root of 11543664 is about 226.0031847516.

The spelling of 11543664 in words is "eleven million, five hundred forty-three thousand, six hundred sixty-four".