6564428 has 24 divisors (see below), whose sum is σ = 12677280. Its totient is φ = 2954880.

The previous prime is 6564419. The next prime is 6564449. The reversal of 6564428 is 8244656.

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, 593 + ... + 3671.

It is an arithmetic number, because the mean of its divisors is an integer number (528220).

Almost surely, 2^6564428 is an apocalyptic number.

It is an amenable number.

6564428 is a deficient number, since it is larger than the sum of its proper divisors (6112852).

6564428 is a wasteful number, since it uses less digits than its factorization.

6564428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137 (or 3135 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 6564428 is about 2562.1139709232. The cubic root of 6564428 is about 187.2401425468.

The spelling of 6564428 in words is "six million, five hundred sixty-four thousand, four hundred twenty-eight".