6805539937 has 4 divisors (see below), whose sum is σ = 7777759936. Its totient is φ = 5833319940.

The previous prime is 6805539919. The next prime is 6805539971. The reversal of 6805539937 is 7399355086.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6805539937 - 2⁷ = 6805539809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6805531937) 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, 486109989 + ... + 486110002.

It is an arithmetic number, because the mean of its divisors is an integer number (1944439984).

Almost surely, 2^6805539937 is an apocalyptic number.

It is an amenable number.

6805539937 is a deficient number, since it is larger than the sum of its proper divisors (972219999).

6805539937 is an equidigital number, since it uses as much as digits as its factorization.

6805539937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972219998.

The product of its (nonzero) digits is 6123600, while the sum is 55.

The square root of 6805539937 is about 82495.6964756344. The cubic root of 6805539937 is about 1895.0508255363.

The spelling of 6805539937 in words is "six billion, eight hundred five million, five hundred thirty-nine thousand, nine hundred thirty-seven".