6686328 has 128 divisors (see below), whose sum is σ = 20275200. Its totient is φ = 1814400.

The previous prime is 6686311. The next prime is 6686333. The reversal of 6686328 is 8236866.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155475 + ... + 155517.

It is an arithmetic number, because the mean of its divisors is an integer number (158400).

Almost surely, 2^6686328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6686328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10137600).

6686328 is an abundant number, since it is smaller than the sum of its proper divisors (13588872).

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

6686328 is a wasteful number, since it uses less digits than its factorization.

6686328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 109 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 6686328 is about 2585.7934952351. The cubic root of 6686328 is about 188.3920444168.

It can be divided in two parts, 668 and 6328, that added together give a palindrome (6996).

The spelling of 6686328 in words is "six million, six hundred eighty-six thousand, three hundred twenty-eight".