3220656416 has 24 divisors (see below), whose sum is σ = 6512039100. Its totient is φ = 1566805248.

The previous prime is 3220656407. The next prime is 3220656457. The reversal of 3220656416 is 6146560223.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2615299600 + 605356816 = 51140^2 + 24604^2 .

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, 1358891 + ... + 1361258.

Almost surely, 2^3220656416 is an apocalyptic number.

It is an amenable number.

3220656416 is an abundant number, since it is smaller than the sum of its proper divisors (3291382684).

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

3220656416 is a wasteful number, since it uses less digits than its factorization.

3220656416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720196 (or 2720188 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 3220656416 is about 56750.8274477122. The cubic root of 3220656416 is about 1476.7765881709.

The spelling of 3220656416 in words is "three billion, two hundred twenty million, six hundred fifty-six thousand, four hundred sixteen".