6688684 has 48 divisors (see below), whose sum is σ = 13547520. Its totient is φ = 2868480.

The previous prime is 6688673. The next prime is 6688691. The reversal of 6688684 is 4868866.

6688684 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39969 + ... + 40135.

It is an arithmetic number, because the mean of its divisors is an integer number (282240).

Almost surely, 2^6688684 is an apocalyptic number.

It is an amenable number.

6688684 is an abundant number, since it is smaller than the sum of its proper divisors (6858836).

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

6688684 is a wasteful number, since it uses less digits than its factorization.

6688684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 236 counting only the distinct ones).

The product of its digits is 442368, while the sum is 46.

The square root of 6688684 is about 2586.2490212661. The cubic root of 6688684 is about 188.4141691433.

The spelling of 6688684 in words is "six million, six hundred eighty-eight thousand, six hundred eighty-four".