6849856 has 28 divisors (see below), whose sum is σ = 14640052. Its totient is φ = 3161088.

The previous prime is 6849851. The next prime is 6849877. The reversal of 6849856 is 6589486.

It can be written as a sum of positive squares in 2 ways, for example, as 1166400 + 5683456 = 1080^2 + 2384^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6849851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3285 + ... + 4948.

It is an arithmetic number, because the mean of its divisors is an integer number (522859).

Almost surely, 2^6849856 is an apocalyptic number.

It is an amenable number.

6849856 is an abundant number, since it is smaller than the sum of its proper divisors (7790196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6849856 is a wasteful number, since it uses less digits than its factorization.

6849856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8258 (or 8248 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 6849856 is about 2617.2229557300. Note that the first 3 decimals coincide. The cubic root of 6849856 is about 189.9155303193.

The spelling of 6849856 in words is "six million, eight hundred forty-nine thousand, eight hundred fifty-six".