3221664424 has 32 divisors (see below), whose sum is σ = 6977404800. Its totient is φ = 1378251520.

The previous prime is 3221664419. The next prime is 3221664443. The reversal of 3221664424 is 4244661223.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 3221664424.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075264 + ... + 1078255.

It is an arithmetic number, because the mean of its divisors is an integer number (218043900).

Almost surely, 2^3221664424 is an apocalyptic number.

3221664424 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

3221664424 is an abundant number, since it is smaller than the sum of its proper divisors (3755740376).

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

3221664424 is a wasteful number, since it uses less digits than its factorization.

3221664424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2153553 (or 2153549 counting only the distinct ones).

The product of its digits is 55296, while the sum is 34.

The square root of 3221664424 is about 56759.7077511856. The cubic root of 3221664424 is about 1476.9306403420.

The spelling of 3221664424 in words is "three billion, two hundred twenty-one million, six hundred sixty-four thousand, four hundred twenty-four".