6684885 has 24 divisors (see below), whose sum is σ = 11676600. Its totient is φ = 3537792.

The previous prime is 6684869. The next prime is 6684907. The reversal of 6684885 is 5884866.

It can be written as a sum of positive squares in 4 ways, for example, as 603729 + 6081156 = 777^2 + 2466^2 .

It is not a de Polignac number, because 6684885 - 2⁴ = 6684869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a d-powerful number, because it can be written as 6⁴ + 6⁵ + 8⁴ + 4¹¹ + 8⁶ + 8⁶ + 5⁹ .

It is a self number, because there is not a number n which added to its sum of digits gives 6684885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6207 + ... + 7203.

It is an arithmetic number, because the mean of its divisors is an integer number (486525).

Almost surely, 2^6684885 is an apocalyptic number.

It is an amenable number.

6684885 is a deficient number, since it is larger than the sum of its proper divisors (4991715).

6684885 is a wasteful number, since it uses less digits than its factorization.

6684885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157 (or 1154 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 6684885 is about 2585.5144555775. The cubic root of 6684885 is about 188.3784909249.

It can be divided in two parts, 6684 and 885, that added together give a square (7569 = 87²).

The spelling of 6684885 in words is "six million, six hundred eighty-four thousand, eight hundred eighty-five".