6411856 has 40 divisors (see below), whose sum is σ = 14356224. Its totient is φ = 2741760.

The previous prime is 6411851. The next prime is 6411869. The reversal of 6411856 is 6581146.

It is a super-2 number, since 2×6411856² = 82223794729472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6411851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1921 + ... + 4063.

Almost surely, 2^6411856 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 6411856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7178112).

6411856 is an abundant number, since it is smaller than the sum of its proper divisors (7944368).

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

6411856 is a wasteful number, since it uses less digits than its factorization.

6411856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179 (or 2173 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 6411856 is about 2532.1642916683. The cubic root of 6411856 is about 185.7781298668.

The spelling of 6411856 in words is "six million, four hundred eleven thousand, eight hundred fifty-six".