6805739872 has 48 divisors (see below), whose sum is σ = 13743317952. Its totient is φ = 3316003840.

The previous prime is 6805739867. The next prime is 6805739909. The reversal of 6805739872 is 2789375086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340722 + ... + 360142.

It is an arithmetic number, because the mean of its divisors is an integer number (286319124).

Almost surely, 2^6805739872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6805739872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6871658976).

6805739872 is an abundant number, since it is smaller than the sum of its proper divisors (6937578080).

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

6805739872 is a wasteful number, since it uses less digits than its factorization.

6805739872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19711 (or 19703 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The square root of 6805739872 is about 82496.9082572189. The cubic root of 6805739872 is about 1895.0693831271.

The spelling of 6805739872 in words is "six billion, eight hundred five million, seven hundred thirty-nine thousand, eight hundred seventy-two".