6864615216 has 50 divisors (see below), whose sum is σ = 19868191772. Its totient is φ = 2288204640.

The previous prime is 6864615211. The next prime is 6864615223. The reversal of 6864615216 is 6125164686.

6864615216 is a `hidden beast` number, since 6 + 8 + 6 + 4 + 615 + 21 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (6864615211) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2647090 + ... + 2649681.

Almost surely, 2^6864615216 is an apocalyptic number.

It is an amenable number.

6864615216 is an abundant number, since it is smaller than the sum of its proper divisors (13003576556).

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

6864615216 is a wasteful number, since it uses less digits than its factorization.

6864615216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5296791 (or 5296776 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 6864615216 is about 82852.9734891875. The cubic root of 6864615216 is about 1900.5183457407.

The spelling of 6864615216 in words is "six billion, eight hundred sixty-four million, six hundred fifteen thousand, two hundred sixteen".