3220640808 has 64 divisors (see below), whose sum is σ = 10038366720. Its totient is φ = 836529600.

The previous prime is 3220640699. The next prime is 3220640821. The reversal of 3220640808 is 8080460223.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 869538 + ... + 873233.

It is an arithmetic number, because the mean of its divisors is an integer number (156849480).

Almost surely, 2^3220640808 is an apocalyptic number.

It is an amenable number.

3220640808 is an abundant number, since it is smaller than the sum of its proper divisors (6817725912).

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

3220640808 is a wasteful number, since it uses less digits than its factorization.

3220640808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742798 (or 1742794 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 3220640808 is about 56750.6899341321. The cubic root of 3220640808 is about 1476.7742025737.

The spelling of 3220640808 in words is "three billion, two hundred twenty million, six hundred forty thousand, eight hundred eight".