6684686 has 8 divisors (see below), whose sum is σ = 10053480. Its totient is φ = 3333528.

The previous prime is 6684677. The next prime is 6684707. The reversal of 6684686 is 6864866.

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

It is a congruent number.

It is an unprimeable number.

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, 3416 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (1256685).

Almost surely, 2^6684686 is an apocalyptic number.

6684686 is a deficient number, since it is larger than the sum of its proper divisors (3368794).

6684686 is a wasteful number, since it uses less digits than its factorization.

6684686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8818.

The product of its digits is 331776, while the sum is 44.

The square root of 6684686 is about 2585.4759716540. The cubic root of 6684686 is about 188.3766216485.

The spelling of 6684686 in words is "six million, six hundred eighty-four thousand, six hundred eighty-six".