3218684680 has 16 divisors (see below), whose sum is σ = 7242040620. Its totient is φ = 1287473856.

The previous prime is 3218684671. The next prime is 3218684731. The reversal of 3218684680 is 864868123.

It can be written as a sum of positive squares in 2 ways, for example, as 3028741156 + 189943524 = 55034^2 + 13782^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3218684680.

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, 40233519 + ... + 40233598.

Almost surely, 2^3218684680 is an apocalyptic number.

It is an amenable number.

3218684680 is an abundant number, since it is smaller than the sum of its proper divisors (4023355940).

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

3218684680 is a wasteful number, since it uses less digits than its factorization.

3218684680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80467128 (or 80467124 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 3218684680 is about 56733.4529180095. The cubic root of 3218684680 is about 1476.4751581094.

The spelling of 3218684680 in words is "three billion, two hundred eighteen million, six hundred eighty-four thousand, six hundred eighty".