6807866 has 16 divisors (see below), whose sum is σ = 11377800. Its totient is φ = 3033408.

The previous prime is 6807863. The next prime is 6807869. The reversal of 6807866 is 6687086.

It is an interprime number because it is at equal distance from previous prime (6807863) and next prime (6807869).

It can be written as a sum of positive squares in 4 ways, for example, as 6528025 + 279841 = 2555^2 + 529^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6807863) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3761 + ... + 5268.

Almost surely, 2^6807866 is an apocalyptic number.

6807866 is a deficient number, since it is larger than the sum of its proper divisors (4569934).

6807866 is a wasteful number, since it uses less digits than its factorization.

6807866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9073.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 6807866 is about 2609.1887628150. The cubic root of 6807866 is about 189.5266703852.

The spelling of 6807866 in words is "six million, eight hundred seven thousand, eight hundred sixty-six".