6686870346 has 24 divisors (see below), whose sum is σ = 15602698020. Its totient is φ = 2057498496.

The previous prime is 6686870297. The next prime is 6686870371. The reversal of 6686870346 is 6430786866.

It can be written as a sum of positive squares in 2 ways, for example, as 6621890625 + 64979721 = 81375^2 + 8061^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6686870292 and 6686870301.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14287951 + ... + 14288418.

Almost surely, 2^6686870346 is an apocalyptic number.

6686870346 is an abundant number, since it is smaller than the sum of its proper divisors (8915827674).

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

6686870346 is a wasteful number, since it uses less digits than its factorization.

6686870346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28576390 (or 28576387 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The square root of 6686870346 is about 81773.2862614681. The cubic root of 6686870346 is about 1883.9713794048.

The spelling of 6686870346 in words is "six billion, six hundred eighty-six million, eight hundred seventy thousand, three hundred forty-six".