6805705 has 16 divisors (see below), whose sum is σ = 8726400. Its totient is φ = 5080320.

The previous prime is 6805699. The next prime is 6805727. The reversal of 6805705 is 5075086.

It is not a de Polignac number, because 6805705 - 2⁷ = 6805577 is a prime.

6805705 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6241 + ... + 7249.

It is an arithmetic number, because the mean of its divisors is an integer number (545400).

Almost surely, 2^6805705 is an apocalyptic number.

It is an amenable number.

6805705 is a deficient number, since it is larger than the sum of its proper divisors (1920695).

6805705 is a wasteful number, since it uses less digits than its factorization.

6805705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 6805705 is about 2608.7746165585. The cubic root of 6805705 is about 189.5066146400.

The spelling of 6805705 in words is "six million, eight hundred five thousand, seven hundred five".