6656256 has 108 divisors (see below), whose sum is σ = 20088432. Its totient is φ = 2198016.

The previous prime is 6656239. The next prime is 6656257. The reversal of 6656256 is 6526566.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6656256.

It is not an unprimeable number, because it can be changed into a prime (6656257) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 62155 + ... + 62261.

It is an arithmetic number, because the mean of its divisors is an integer number (186004).

Almost surely, 2^6656256 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 6656256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10044216).

6656256 is an abundant number, since it is smaller than the sum of its proper divisors (13432176).

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

6656256 is an equidigital number, since it uses as much as digits as its factorization.

6656256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 112 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 6656256 is about 2579.9720928723. The cubic root of 6656256 is about 188.1091866121.

The spelling of 6656256 in words is "six million, six hundred fifty-six thousand, two hundred fifty-six".