3220904688 has 20 divisors (see below), whose sum is σ = 8320670568. Its totient is φ = 1073634880.

The previous prime is 3220904683. The next prime is 3220904717. The reversal of 3220904688 is 8864090223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220904683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33551043 + ... + 33551138.

Almost surely, 2^3220904688 is an apocalyptic number.

It is an amenable number.

3220904688 is an abundant number, since it is smaller than the sum of its proper divisors (5099765880).

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

3220904688 is a wasteful number, since it uses less digits than its factorization.

3220904688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67102192 (or 67102186 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 3220904688 is about 56753.0147921676. The cubic root of 3220904688 is about 1476.8145341472.

The spelling of 3220904688 in words is "three billion, two hundred twenty million, nine hundred four thousand, six hundred eighty-eight".