3220664668 has 24 divisors (see below), whose sum is σ = 6071868320. Its totient is φ = 1485933120.

The previous prime is 3220664659. The next prime is 3220664693. The reversal of 3220664668 is 8664660223.

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, 163258 + ... + 181918.

Almost surely, 2^3220664668 is an apocalyptic number.

It is an amenable number.

3220664668 is a deficient number, since it is larger than the sum of its proper divisors (2851203652).

3220664668 is a wasteful number, since it uses less digits than its factorization.

3220664668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21997 (or 21995 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 43.

The square root of 3220664668 is about 56750.9001514513. The cubic root of 3220664668 is about 1476.7778494407. Note that the first 3 decimals are identical.

The spelling of 3220664668 in words is "three billion, two hundred twenty million, six hundred sixty-four thousand, six hundred sixty-eight".