3221956688 has 40 divisors (see below), whose sum is σ = 6613672680. Its totient is φ = 1515315200.

The previous prime is 3221956687. The next prime is 3221956693. The reversal of 3221956688 is 8866591223.

It can be written as a sum of positive squares in 4 ways, for example, as 2000593984 + 1221362704 = 44728^2 + 34948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221956681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759758 + ... + 763986.

It is an arithmetic number, because the mean of its divisors is an integer number (165341817).

Almost surely, 2^3221956688 is an apocalyptic number.

It is an amenable number.

3221956688 is an abundant number, since it is smaller than the sum of its proper divisors (3391715992).

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

3221956688 is a wasteful number, since it uses less digits than its factorization.

3221956688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7055 (or 7049 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 50.

The square root of 3221956688 is about 56762.2822656031. The cubic root of 3221956688 is about 1476.9753005494.

The spelling of 3221956688 in words is "three billion, two hundred twenty-one million, nine hundred fifty-six thousand, six hundred eighty-eight".