6845864 has 8 divisors (see below), whose sum is σ = 12836010. Its totient is φ = 3422928.

The previous prime is 6845843. The next prime is 6845869. The reversal of 6845864 is 4685486.

It can be written as a sum of positive squares in only one way, i.e., 6543364 + 302500 = 2558^2 + 550^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6845869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427859 + ... + 427874.

Almost surely, 2^6845864 is an apocalyptic number.

It is an amenable number.

6845864 is a deficient number, since it is larger than the sum of its proper divisors (5990146).

6845864 is a wasteful number, since it uses less digits than its factorization.

6845864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855739 (or 855735 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 6845864 is about 2616.4602041690. The cubic root of 6845864 is about 189.8786297809.

The spelling of 6845864 in words is "six million, eight hundred forty-five thousand, eight hundred sixty-four".