3218420684 has 6 divisors (see below), whose sum is σ = 5632236204. Its totient is φ = 1609210340.

The previous prime is 3218420627. The next prime is 3218420719. The reversal of 3218420684 is 4860248123.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402302582 + ... + 402302589.

It is an arithmetic number, because the mean of its divisors is an integer number (938706034).

Almost surely, 2^3218420684 is an apocalyptic number.

It is an amenable number.

3218420684 is a deficient number, since it is larger than the sum of its proper divisors (2413815520).

3218420684 is a wasteful number, since it uses less digits than its factorization.

3218420684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804605175 (or 804605173 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 3218420684 is about 56731.1262359562. The cubic root of 3218420684 is about 1476.4347902540.

The spelling of 3218420684 in words is "three billion, two hundred eighteen million, four hundred twenty thousand, six hundred eighty-four".