6386856 has 48 divisors (see below), whose sum is σ = 18577440. Its totient is φ = 1824480.

The previous prime is 6386839. The next prime is 6386923. The reversal of 6386856 is 6586836.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an Ulam number.

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, 1540 + ... + 3891.

It is an arithmetic number, because the mean of its divisors is an integer number (387030).

Almost surely, 2^6386856 is an apocalyptic number.

It is an amenable number.

6386856 is an abundant number, since it is smaller than the sum of its proper divisors (12190584).

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

6386856 is a wasteful number, since it uses less digits than its factorization.

6386856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5454 (or 5443 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 6386856 is about 2527.2229818518. Note that the first 3 decimals coincide. The cubic root of 6386856 is about 185.5363640588.

The spelling of 6386856 in words is "six million, three hundred eighty-six thousand, eight hundred fifty-six".