6847865 has 8 divisors (see below), whose sum is σ = 8372808. Its totient is φ = 5374720.

The previous prime is 6847843. The next prime is 6847871. The reversal of 6847865 is 5687486.

It can be written as a sum of positive squares in 4 ways, for example, as 657721 + 6190144 = 811^2 + 2488^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6847865 - 2⁶ = 6847801 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

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, 12656 + ... + 13185.

It is an arithmetic number, because the mean of its divisors is an integer number (1046601).

Almost surely, 2^6847865 is an apocalyptic number.

It is an amenable number.

6847865 is a deficient number, since it is larger than the sum of its proper divisors (1524943).

6847865 is a wasteful number, since it uses less digits than its factorization.

6847865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25899.

The product of its digits is 322560, while the sum is 44.

The square root of 6847865 is about 2616.8425630901. The cubic root of 6847865 is about 189.8971280608.

The spelling of 6847865 in words is "six million, eight hundred forty-seven thousand, eight hundred sixty-five".