6847864 has 8 divisors (see below), whose sum is σ = 12839760. Its totient is φ = 3423928.

The previous prime is 6847843. The next prime is 6847871. The reversal of 6847864 is 4687486.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 6847864.

It is a congruent 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 as a sum of consecutive naturals, namely, 427984 + ... + 427999.

It is an arithmetic number, because the mean of its divisors is an integer number (1604970).

Almost surely, 2^6847864 is an apocalyptic number.

It is an amenable number.

6847864 is a deficient number, since it is larger than the sum of its proper divisors (5991896).

6847864 is a wasteful number, since it uses less digits than its factorization.

6847864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855989 (or 855985 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 6847864 is about 2616.8423720201. The cubic root of 6847864 is about 189.8971188172.

The spelling of 6847864 in words is "six million, eight hundred forty-seven thousand, eight hundred sixty-four".