6688448866 has 24 divisors (see below), whose sum is σ = 11054542032. Its totient is φ = 3010002000.

The previous prime is 6688448863. The next prime is 6688448903.

6688448866 is nontrivially palindromic in base 10.

6688448866 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 = 6688448798 and 6688448807.

It is not an unprimeable number, because it can be changed into a prime (6688448861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209521 + ... + 239323.

It is an arithmetic number, because the mean of its divisors is an integer number (460605918).

Almost surely, 2^6688448866 is an apocalyptic number.

6688448866 is a deficient number, since it is larger than the sum of its proper divisors (4366093166).

6688448866 is a wasteful number, since it uses less digits than its factorization.

6688448866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30018 (or 29917 counting only the distinct ones).

The product of its digits is 84934656, while the sum is 64.

The square root of 6688448866 is about 81782.9374992119. The cubic root of 6688448866 is about 1884.1196128021.

It can be divided in two parts, 6688 and 448866, that added together give a palindrome (455554).

The spelling of 6688448866 in words is "six billion, six hundred eighty-eight million, four hundred forty-eight thousand, eight hundred sixty-six".