6684456 has 32 divisors (see below), whose sum is σ = 16964640. Its totient is φ = 2194368.

The previous prime is 6684449. The next prime is 6684473. The reversal of 6684456 is 6544866.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471 + ... + 3686.

It is an arithmetic number, because the mean of its divisors is an integer number (530145).

Almost surely, 2^6684456 is an apocalyptic number.

It is an amenable number.

6684456 is an abundant number, since it is smaller than the sum of its proper divisors (10280184).

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

6684456 is a wasteful number, since it uses less digits than its factorization.

6684456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233 (or 4229 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 6684456 is about 2585.4314920338. The cubic root of 6684456 is about 188.3744611322.

It can be divided in two parts, 6684 and 456, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 6684456 in words is "six million, six hundred eighty-four thousand, four hundred fifty-six".