6878905 has 16 divisors (see below), whose sum is σ = 9067968. Its totient is φ = 4968000.

The previous prime is 6878903. The next prime is 6878917. The reversal of 6878905 is 5098786.

It is a happy number.

It is not a de Polignac number, because 6878905 - 2¹ = 6878903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6878903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9610 + ... + 10300.

It is an arithmetic number, because the mean of its divisors is an integer number (566748).

Almost surely, 2^6878905 is an apocalyptic number.

It is an amenable number.

6878905 is a deficient number, since it is larger than the sum of its proper divisors (2189063).

6878905 is a wasteful number, since it uses less digits than its factorization.

6878905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 6878905 is about 2622.7666689967. The cubic root of 6878905 is about 190.1836175073.

The spelling of 6878905 in words is "six million, eight hundred seventy-eight thousand, nine hundred five".