6631856 has 60 divisors (see below), whose sum is σ = 16327080. Its totient is φ = 2580480.

The previous prime is 6631789. The next prime is 6631871. The reversal of 6631856 is 6581366.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8240 + ... + 9008.

It is an arithmetic number, because the mean of its divisors is an integer number (272118).

Almost surely, 2^6631856 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 6631856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8163540).

6631856 is an abundant number, since it is smaller than the sum of its proper divisors (9695224).

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

6631856 is a wasteful number, since it uses less digits than its factorization.

6631856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 789 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 6631856 is about 2575.2390180331. The cubic root of 6631856 is about 187.8790530357.

The spelling of 6631856 in words is "six million, six hundred thirty-one thousand, eight hundred fifty-six".