6895978686 has 32 divisors (see below), whose sum is σ = 15334513920. Its totient is φ = 2297142072.

The previous prime is 6895978669. The next prime is 6895978709. The reversal of 6895978686 is 6868795986.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41941 + ... + 124703.

It is an arithmetic number, because the mean of its divisors is an integer number (479203560).

Almost surely, 2^6895978686 is an apocalyptic number.

6895978686 is an abundant number, since it is smaller than the sum of its proper divisors (8438535234).

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

6895978686 is a wasteful number, since it uses less digits than its factorization.

6895978686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84317 (or 84311 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 72.

The square root of 6895978686 is about 83042.0296356008. The cubic root of 6895978686 is about 1903.4083499873.

The spelling of 6895978686 in words is "six billion, eight hundred ninety-five million, nine hundred seventy-eight thousand, six hundred eighty-six".