686874224 has 20 divisors (see below), whose sum is σ = 1353376920. Its totient is φ = 337615680.

The previous prime is 686874163. The next prime is 686874233. The reversal of 686874224 is 422478686.

686874224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 362867 + ... + 364754.

It is an arithmetic number, because the mean of its divisors is an integer number (67668846).

Almost surely, 2^686874224 is an apocalyptic number.

It is an amenable number.

686874224 is a deficient number, since it is larger than the sum of its proper divisors (666502696).

686874224 is a wasteful number, since it uses less digits than its factorization.

686874224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727688 (or 727682 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 47.

The square root of 686874224 is about 26208.2854074814. The cubic root of 686874224 is about 882.3192198452.

The spelling of 686874224 in words is "six hundred eighty-six million, eight hundred seventy-four thousand, two hundred twenty-four".