3220975805 has 18 divisors (see below), whose sum is σ = 4108660206. Its totient is φ = 2423580928.

The previous prime is 3220975801. The next prime is 3220975811. The reversal of 3220975805 is 5085790223.

It can be written as a sum of positive squares in 9 ways, for example, as 201583204 + 3019392601 = 14198^2 + 54949^2 .

It is not a de Polignac number, because 3220975805 - 2² = 3220975801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220975801) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2156639 + ... + 2158131.

Almost surely, 2^3220975805 is an apocalyptic number.

It is an amenable number.

3220975805 is a deficient number, since it is larger than the sum of its proper divisors (887684401).

3220975805 is an frugal number, since it uses more digits than its factorization.

3220975805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025 (or 1515 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 3220975805 is about 56753.6413369222. The cubic root of 3220975805 is about 1476.8254033342.

The spelling of 3220975805 in words is "three billion, two hundred twenty million, nine hundred seventy-five thousand, eight hundred five".