6655728 has 20 divisors (see below), whose sum is σ = 17194088. Its totient is φ = 2218560.

The previous prime is 6655723. The next prime is 6655729. The reversal of 6655728 is 8275566.

It is a happy number.

6655728 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6655723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69283 + ... + 69378.

Almost surely, 2^6655728 is an apocalyptic number.

It is an amenable number.

6655728 is an abundant number, since it is smaller than the sum of its proper divisors (10538360).

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

6655728 is a wasteful number, since it uses less digits than its factorization.

6655728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138672 (or 138666 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 6655728 is about 2579.8697641548. The cubic root of 6655728 is about 188.1042126309.

The spelling of 6655728 in words is "six million, six hundred fifty-five thousand, seven hundred twenty-eight".