220466605 has 4 divisors (see below), whose sum is σ = 264559932. Its totient is φ = 176373280.

The previous prime is 220466599. The next prime is 220466611. The reversal of 220466605 is 506664022.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (220466599) and next prime (220466611).

It can be written as a sum of positive squares in 2 ways, for example, as 174741961 + 45724644 = 13219^2 + 6762^2 .

It is not a de Polignac number, because 220466605 - 2¹¹ = 220464557 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 3 ways as a sum of consecutive naturals, for example, 22046656 + ... + 22046665.

It is an arithmetic number, because the mean of its divisors is an integer number (66139983).

Almost surely, 2^220466605 is an apocalyptic number.

It is an amenable number.

220466605 is a deficient number, since it is larger than the sum of its proper divisors (44093327).

220466605 is an equidigital number, since it uses as much as digits as its factorization.

220466605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44093326.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 220466605 is about 14848.1178941979. The cubic root of 220466605 is about 604.1075611039.

The spelling of 220466605 in words is "two hundred twenty million, four hundred sixty-six thousand, six hundred five".