6443564 has 12 divisors (see below), whose sum is σ = 11431224. Its totient is φ = 3177504.

The previous prime is 6443557. The next prime is 6443573. The reversal of 6443564 is 4653446.

It is a self number, because there is not a number n which added to its sum of digits gives 6443564.

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, 10742 + ... + 11325.

It is an arithmetic number, because the mean of its divisors is an integer number (952602).

Almost surely, 2^6443564 is an apocalyptic number.

It is an amenable number.

6443564 is a deficient number, since it is larger than the sum of its proper divisors (4987660).

6443564 is a wasteful number, since it uses less digits than its factorization.

6443564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22144 (or 22142 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

The square root of 6443564 is about 2538.4176173357. The cubic root of 6443564 is about 186.0838639814.

It can be divided in two parts, 6443 and 564, that added together give a palindrome (7007).

The spelling of 6443564 in words is "six million, four hundred forty-three thousand, five hundred sixty-four".