6866686 has 8 divisors (see below), whose sum is σ = 10632384. Its totient is φ = 3322560.

The previous prime is 6866683. The next prime is 6866693.

6866686 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6866681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55315 + ... + 55438.

It is an arithmetic number, because the mean of its divisors is an integer number (1329048).

Almost surely, 2^6866686 is an apocalyptic number.

6866686 is a deficient number, since it is larger than the sum of its proper divisors (3765698).

6866686 is a wasteful number, since it uses less digits than its factorization.

6866686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110786.

The product of its digits is 497664, while the sum is 46.

The square root of 6866686 is about 2620.4362232270. The cubic root of 6866686 is about 190.0709430368.

The spelling of 6866686 in words is "six million, eight hundred sixty-six thousand, six hundred eighty-six".