3221646384 has 160 divisors (see below), whose sum is σ = 9720806400. Its totient is φ = 909031680.

The previous prime is 3221646383. The next prime is 3221646413. The reversal of 3221646384 is 4836461223.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (3221646383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 589167 + ... + 594609.

It is an arithmetic number, because the mean of its divisors is an integer number (60755040).

Almost surely, 2^3221646384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3221646384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4860403200).

3221646384 is an abundant number, since it is smaller than the sum of its proper divisors (6499160016).

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

3221646384 is a wasteful number, since it uses less digits than its factorization.

3221646384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5543 (or 5537 counting only the distinct ones).

The product of its digits is 165888, while the sum is 39.

The square root of 3221646384 is about 56759.5488354162. The cubic root of 3221646384 is about 1476.9278836015.

The spelling of 3221646384 in words is "three billion, two hundred twenty-one million, six hundred forty-six thousand, three hundred eighty-four".