6885564 has 24 divisors (see below), whose sum is σ = 18361728. Its totient is φ = 1967280.

The previous prime is 6885553. The next prime is 6885583. The reversal of 6885564 is 4655886.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 40902 + ... + 41069.

It is an arithmetic number, because the mean of its divisors is an integer number (765072).

Almost surely, 2^6885564 is an apocalyptic number.

It is an amenable number.

6885564 is an abundant number, since it is smaller than the sum of its proper divisors (11476164).

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

6885564 is a wasteful number, since it uses less digits than its factorization.

6885564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81985 (or 81983 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 6885564 is about 2624.0358229262. The cubic root of 6885564 is about 190.2449656569.

The spelling of 6885564 in words is "six million, eight hundred eighty-five thousand, five hundred sixty-four".