726684865228 has 18 divisors (see below), whose sum is σ = 1479322761756. Its totient is φ = 311436370728.

The previous prime is 726684865211. The next prime is 726684865261. The reversal of 726684865228 is 822568486627.

It is a self number, because there is not a number n which added to its sum of digits gives 726684865228.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1853787726 + ... + 1853788117.

Almost surely, 2^726684865228 is an apocalyptic number.

It is an amenable number.

726684865228 is an abundant number, since it is smaller than the sum of its proper divisors (752637896528).

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

726684865228 is a wasteful number, since it uses less digits than its factorization.

726684865228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707575861 (or 3707575852 counting only the distinct ones).

The product of its digits is 123863040, while the sum is 64.

The spelling of 726684865228 in words is "seven hundred twenty-six billion, six hundred eighty-four million, eight hundred sixty-five thousand, two hundred twenty-eight".