11864564 has 6 divisors (see below), whose sum is σ = 20762994. Its totient is φ = 5932280.

The previous prime is 11864563. The next prime is 11864581. The reversal of 11864564 is 46546811.

11864564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11155600 + 708964 = 3340^2 + 842^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11864563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1483067 + ... + 1483074.

It is an arithmetic number, because the mean of its divisors is an integer number (3460499).

Almost surely, 2^11864564 is an apocalyptic number.

It is an amenable number.

11864564 is a deficient number, since it is larger than the sum of its proper divisors (8898430).

11864564 is a wasteful number, since it uses less digits than its factorization.

11864564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966145 (or 2966143 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 11864564 is about 3444.4976411663. The cubic root of 11864564 is about 228.0782792668.

The spelling of 11864564 in words is "eleven million, eight hundred sixty-four thousand, five hundred sixty-four".