220220605 has 16 divisors (see below), whose sum is σ = 290680128. Its totient is φ = 160155600.

The previous prime is 220220599. The next prime is 220220641. The reversal of 220220605 is 506022022.

It is not a de Polignac number, because 220220605 - 2³ = 220220597 is a prime.

It is a super-2 number, since 2×220220605² = 96994229733132050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9891 + ... + 23200.

It is an arithmetic number, because the mean of its divisors is an integer number (18167508).

Almost surely, 2^220220605 is an apocalyptic number.

It is an amenable number.

220220605 is a deficient number, since it is larger than the sum of its proper divisors (70459523).

220220605 is an equidigital number, since it uses as much as digits as its factorization.

220220605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33129 (or 33107 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220220605 is about 14839.8317038975. The cubic root of 220220605 is about 603.8827866711.

Adding to 220220605 its reverse (506022022), we get a palindrome (726242627).

The spelling of 220220605 in words is "two hundred twenty million, two hundred twenty thousand, six hundred five".