11945564 has 36 divisors (see below), whose sum is σ = 22388184. Its totient is φ = 5573568.

The previous prime is 11945519. The next prime is 11945581. The reversal of 11945564 is 46554911.

11945564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178259 + ... + 178325.

It is an arithmetic number, because the mean of its divisors is an integer number (621894).

Almost surely, 2^11945564 is an apocalyptic number.

It is an amenable number.

11945564 is a deficient number, since it is larger than the sum of its proper divisors (10442620).

11945564 is a wasteful number, since it uses less digits than its factorization.

11945564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 151 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 11945564 is about 3456.2355243820. The cubic root of 11945564 is about 228.5961366891.

The spelling of 11945564 in words is "eleven million, nine hundred forty-five thousand, five hundred sixty-four".