6868686 has 24 divisors (see below), whose sum is σ = 15101352. Its totient is φ = 2081200.

The previous prime is 6868681. The next prime is 6868699.

6868686 is nontrivially palindromic in base 10.

6868686 is an undulating number in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4005 + ... + 5456.

It is an arithmetic number, because the mean of its divisors is an integer number (629223).

Almost surely, 2^6868686 is an apocalyptic number.

6868686 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6868686 is an abundant number, since it is smaller than the sum of its proper divisors (8232666).

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

6868686 is a wasteful number, since it uses less digits than its factorization.

6868686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9488 (or 9477 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 6868686 is about 2620.8178112948. The cubic root of 6868686 is about 190.0893946831.

The spelling of 6868686 in words is "six million, eight hundred sixty-eight thousand, six hundred eighty-six".