220446811 has 6 divisors (see below), whose sum is σ = 238708860. Its totient is φ = 203489208.

The previous prime is 220446781. The next prime is 220446823. The reversal of 220446811 is 118644022.

It is not a de Polignac number, because 220446811 - 2¹³ = 220438619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220446811.

It is not an unprimeable number, because it can be changed into a prime (220446211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 652041 + ... + 652378.

It is an arithmetic number, because the mean of its divisors is an integer number (39784810).

Almost surely, 2^220446811 is an apocalyptic number.

220446811 is a deficient number, since it is larger than the sum of its proper divisors (18262049).

220446811 is a wasteful number, since it uses less digits than its factorization.

220446811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304445 (or 1304432 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 220446811 is about 14847.4513301105. The cubic root of 220446811 is about 604.0894811730.

The spelling of 220446811 in words is "two hundred twenty million, four hundred forty-six thousand, eight hundred eleven".