10809564 has 12 divisors (see below), whose sum is σ = 25222344. Its totient is φ = 3603184.

The previous prime is 10809553. The next prime is 10809571. The reversal of 10809564 is 46590801.

10809564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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, 450387 + ... + 450410.

It is an arithmetic number, because the mean of its divisors is an integer number (2101862).

Almost surely, 2^10809564 is an apocalyptic number.

It is an amenable number.

10809564 is an abundant number, since it is smaller than the sum of its proper divisors (14412780).

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

10809564 is a wasteful number, since it uses less digits than its factorization.

10809564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900804 (or 900802 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 10809564 is about 3287.7901392881. The cubic root of 10809564 is about 221.1071189588.

The spelling of 10809564 in words is "ten million, eight hundred nine thousand, five hundred sixty-four".