6877809 has 12 divisors (see below), whose sum is σ = 10519236. Its totient is φ = 4315392.

The previous prime is 6877799. The next prime is 6877817. The reversal of 6877809 is 9087786.

6877809 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6426225 + 451584 = 2535^2 + 672^2 .

It is not a de Polignac number, because 6877809 - 2⁷ = 6877681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6877889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22324 + ... + 22629.

It is an arithmetic number, because the mean of its divisors is an integer number (876603).

Almost surely, 2^6877809 is an apocalyptic number.

It is an amenable number.

6877809 is a deficient number, since it is larger than the sum of its proper divisors (3641427).

6877809 is a wasteful number, since it uses less digits than its factorization.

6877809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44976 (or 44973 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 6877809 is about 2622.5577210044. The cubic root of 6877809 is about 190.1735164657.

It can be divided in two parts, 68 and 77809, that added together give a palindrome (77877).

The spelling of 6877809 in words is "six million, eight hundred seventy-seven thousand, eight hundred nine".