6808992840 has 320 divisors, whose sum is σ = 24844881600. Its totient is φ = 1662571008.

The previous prime is 6808992823. The next prime is 6808992863. The reversal of 6808992840 is 482998086.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5854099 + ... + 5855261.

It is an arithmetic number, because the mean of its divisors is an integer number (77640255).

Almost surely, 2^6808992840 is an apocalyptic number.

6808992840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6808992840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12422440800).

6808992840 is an abundant number, since it is smaller than the sum of its proper divisors (18035888760).

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

6808992840 is a wasteful number, since it uses less digits than its factorization.

6808992840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 6808992840 is about 82516.6215983180. The cubic root of 6808992840 is about 1895.3712664523.

The spelling of 6808992840 in words is "six billion, eight hundred eight million, nine hundred ninety-two thousand, eight hundred forty".