3220855 has 16 divisors (see below), whose sum is σ = 4254624. Its totient is φ = 2321280.

The previous prime is 3220849. The next prime is 3220859. The reversal of 3220855 is 5580223.

It is not a de Polignac number, because 3220855 - 2⁷ = 3220727 is a prime.

3220855 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8449 + ... + 8821.

It is an arithmetic number, because the mean of its divisors is an integer number (265914).

Almost surely, 2^3220855 is an apocalyptic number.

3220855 is a deficient number, since it is larger than the sum of its proper divisors (1033769).

3220855 is a wasteful number, since it uses less digits than its factorization.

3220855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 3220855 is about 1794.6740651160. The cubic root of 3220855 is about 147.6806939973.

The spelling of 3220855 in words is "three million, two hundred twenty thousand, eight hundred fifty-five".