6564856 has 16 divisors (see below), whose sum is σ = 13033440. Its totient is φ = 3089280.

The previous prime is 6564847. The next prime is 6564917. The reversal of 6564856 is 6584656.

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, 24000 + ... + 24271.

It is an arithmetic number, because the mean of its divisors is an integer number (814590).

Almost surely, 2^6564856 is an apocalyptic number.

It is an amenable number.

6564856 is a deficient number, since it is larger than the sum of its proper divisors (6468584).

6564856 is a wasteful number, since it uses less digits than its factorization.

6564856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48294 (or 48290 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 6564856 is about 2562.1974943396. The cubic root of 6564856 is about 187.2442118041.

The spelling of 6564856 in words is "six million, five hundred sixty-four thousand, eight hundred fifty-six".