6688338866 has 64 divisors (see below), whose sum is σ = 12121042176. Its totient is φ = 2730393600.

The previous prime is 6688338803. The next prime is 6688338893.

6688338866 is nontrivially palindromic in base 10.

6688338866 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6688338799 and 6688338808.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5513276 + ... + 5514488.

It is an arithmetic number, because the mean of its divisors is an integer number (189391284).

Almost surely, 2^6688338866 is an apocalyptic number.

6688338866 is a deficient number, since it is larger than the sum of its proper divisors (5432703310).

6688338866 is a wasteful number, since it uses less digits than its factorization.

6688338866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907.

The product of its digits is 47775744, while the sum is 62.

The square root of 6688338866 is about 81782.2649845307. The cubic root of 6688338866 is about 1884.1092838355.

The spelling of 6688338866 in words is "six billion, six hundred eighty-eight million, three hundred thirty-eight thousand, eight hundred sixty-six".