6868898988687 has 24 divisors (see below), whose sum is σ = 9967615916544. Its totient is φ = 4558122361104.

The previous prime is 6868898988647. The next prime is 6868898988689. The reversal of 6868898988687 is 7868898988686.

It is not a de Polignac number, because 6868898988687 - 2⁷ = 6868898988559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868898988689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1708438 + ... + 4081244.

It is an arithmetic number, because the mean of its divisors is an integer number (415317329856).

Almost surely, 2^{6868898988687} is an apocalyptic number.

6868898988687 is a deficient number, since it is larger than the sum of its proper divisors (3098716927857).

6868898988687 is a wasteful number, since it uses less digits than its factorization.

6868898988687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374299 (or 2374296 counting only the distinct ones).

The product of its digits is 256842399744, while the sum is 99.

Subtracting 6868898988687 from its reverse (7868898988686), we obtain a palindrome (999999999999).

The spelling of 6868898988687 in words is "six trillion, eight hundred sixty-eight billion, eight hundred ninety-eight million, nine hundred eighty-eight thousand, six hundred eighty-seven".