6686800685 has 16 divisors (see below), whose sum is σ = 8274479616. Its totient is φ = 5184772608.

The previous prime is 6686800669. The next prime is 6686800711. The reversal of 6686800685 is 5860086866.

It is a cyclic number.

It is not a de Polignac number, because 6686800685 - 2⁴ = 6686800669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113924 + ... + 162333.

It is an arithmetic number, because the mean of its divisors is an integer number (517154976).

Almost surely, 2^6686800685 is an apocalyptic number.

It is an amenable number.

6686800685 is a deficient number, since it is larger than the sum of its proper divisors (1587678931).

6686800685 is a wasteful number, since it uses less digits than its factorization.

6686800685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276412.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The square root of 6686800685 is about 81772.8603205244. The cubic root of 6686800685 is about 1883.9648372419.

The spelling of 6686800685 in words is "six billion, six hundred eighty-six million, eight hundred thousand, six hundred eighty-five".