6605856 has 36 divisors (see below), whose sum is σ = 18786222. Its totient is φ = 2201856.

The previous prime is 6605849. The next prime is 6605857. The reversal of 6605856 is 6585066.

It can be written as a sum of positive squares in only one way, i.e., 6170256 + 435600 = 2484^2 + 660^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 6605856.

It is not an unprimeable number, because it can be changed into a prime (6605857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11181 + ... + 11756.

Almost surely, 2^6605856 is an apocalyptic number.

It is an amenable number.

6605856 is an abundant number, since it is smaller than the sum of its proper divisors (12180366).

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

6605856 is a wasteful number, since it uses less digits than its factorization.

6605856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22953 (or 22942 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 6605856 is about 2570.1859854882. The cubic root of 6605856 is about 187.6332066762.

Subtracting from 6605856 its product of nonzero digits (43200), we obtain a palindrome (6562656).

The spelling of 6605856 in words is "six million, six hundred five thousand, eight hundred fifty-six".