3221260566 has 16 divisors (see below), whose sum is σ = 6459346944. Its totient is φ = 1070949224.

The previous prime is 3221260543. The next prime is 3221260621. The reversal of 3221260566 is 6650621223.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698586 + ... + 703181.

It is an arithmetic number, because the mean of its divisors is an integer number (403709184).

Almost surely, 2^3221260566 is an apocalyptic number.

3221260566 is an abundant number, since it is smaller than the sum of its proper divisors (3238086378).

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

3221260566 is a wasteful number, since it uses less digits than its factorization.

3221260566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402155.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 3221260566 is about 56756.1500279926. The cubic root of 3221260566 is about 1476.8689232602.

Adding to 3221260566 its reverse (6650621223), we get a palindrome (9871881789).

The spelling of 3221260566 in words is "three billion, two hundred twenty-one million, two hundred sixty thousand, five hundred sixty-six".