6221856 has 24 divisors (see below), whose sum is σ = 16332624. Its totient is φ = 2073920.

The previous prime is 6221849. The next prime is 6221867. The reversal of 6221856 is 6581226.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×6221856² = 77422984169472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32310 + ... + 32501.

It is an arithmetic number, because the mean of its divisors is an integer number (680526).

Almost surely, 2^6221856 is an apocalyptic number.

It is an amenable number.

6221856 is an abundant number, since it is smaller than the sum of its proper divisors (10110768).

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

6221856 is a wasteful number, since it uses less digits than its factorization.

6221856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64824 (or 64816 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 6221856 is about 2494.3648490147. The cubic root of 6221856 is about 183.9246698570.

The spelling of 6221856 in words is "six million, two hundred twenty-one thousand, eight hundred fifty-six".