6444564 has 48 divisors (see below), whose sum is σ = 18200448. Its totient is φ = 1732608.

The previous prime is 6444551. The next prime is 6444569. The reversal of 6444564 is 4654446.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829 + ... + 3684.

It is an arithmetic number, because the mean of its divisors is an integer number (379176).

Almost surely, 2^6444564 is an apocalyptic number.

It is an amenable number.

6444564 is an abundant number, since it is smaller than the sum of its proper divisors (11755884).

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

6444564 is a wasteful number, since it uses less digits than its factorization.

6444564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544 (or 4542 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

The square root of 6444564 is about 2538.6145827991. The cubic root of 6444564 is about 186.0934898261.

The spelling of 6444564 in words is "six million, four hundred forty-four thousand, five hundred sixty-four".