6866969697 has 16 divisors (see below), whose sum is σ = 11626615680. Its totient is φ = 3923982576.

The previous prime is 6866969689. The next prime is 6866969717. The reversal of 6866969697 is 7969696686.

It is a happy number.

6866969697 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6866969697 - 2³ = 6866969689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6866169697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18166398 + ... + 18166775.

It is an arithmetic number, because the mean of its divisors is an integer number (726663480).

Almost surely, 2^6866969697 is an apocalyptic number.

It is an amenable number.

6866969697 is a deficient number, since it is larger than the sum of its proper divisors (4759645983).

6866969697 is a wasteful number, since it uses less digits than its factorization.

6866969697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36333189 (or 36333183 counting only the distinct ones).

The product of its digits is 317447424, while the sum is 72.

The square root of 6866969697 is about 82867.1810610208. The cubic root of 6866969697 is about 1900.7356059317.

The spelling of 6866969697 in words is "six billion, eight hundred sixty-six million, nine hundred sixty-nine thousand, six hundred ninety-seven".