6555856 has 40 divisors (see below), whose sum is σ = 13392000. Its totient is φ = 3104640.

The previous prime is 6555839. The next prime is 6555907. The reversal of 6555856 is 6585556.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32845 + ... + 33043.

It is an arithmetic number, because the mean of its divisors is an integer number (334800).

Almost surely, 2^6555856 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 6555856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6696000).

6555856 is an abundant number, since it is smaller than the sum of its proper divisors (6836144).

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

6555856 is a wasteful number, since it uses less digits than its factorization.

6555856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 301 counting only the distinct ones).

The product of its digits is 180000, while the sum is 40.

The square root of 6555856 is about 2560.4405870865. The cubic root of 6555856 is about 187.1586060374.

The spelling of 6555856 in words is "six million, five hundred fifty-five thousand, eight hundred fifty-six".