6865656 has 32 divisors (see below), whose sum is σ = 19616640. Its totient is φ = 1961568.

The previous prime is 6865643. The next prime is 6865657. The reversal of 6865656 is 6565686.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6865657) 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 in 7 ways as a sum of consecutive naturals, for example, 20266 + ... + 20601.

It is an arithmetic number, because the mean of its divisors is an integer number (613020).

Almost surely, 2^6865656 is an apocalyptic number.

It is an amenable number.

6865656 is an abundant number, since it is smaller than the sum of its proper divisors (12750984).

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

6865656 is a wasteful number, since it uses less digits than its factorization.

6865656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40883 (or 40879 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 6865656 is about 2620.2396836931. The cubic root of 6865656 is about 190.0614390412.

The spelling of 6865656 in words is "six million, eight hundred sixty-five thousand, six hundred fifty-six".