6678813920 has 24 divisors (see below), whose sum is σ = 15778698264. Its totient is φ = 2671525504.

The previous prime is 6678813907. The next prime is 6678813923. The reversal of 6678813920 is 293188766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6678813923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20871134 + ... + 20871453.

It is an arithmetic number, because the mean of its divisors is an integer number (657445761).

Almost surely, 2^6678813920 is an apocalyptic number.

It is an amenable number.

6678813920 is an abundant number, since it is smaller than the sum of its proper divisors (9099884344).

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

6678813920 is a wasteful number, since it uses less digits than its factorization.

6678813920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41742602 (or 41742594 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 6678813920 is about 81724.0106700595. The cubic root of 6678813920 is about 1883.2144644914.

It can be divided in two parts, 66788 and 13920, that added together give a palindrome (80708).

The spelling of 6678813920 in words is "six billion, six hundred seventy-eight million, eight hundred thirteen thousand, nine hundred twenty".