220520606 has 4 divisors (see below), whose sum is σ = 330780912. Its totient is φ = 110260302.

The previous prime is 220520603. The next prime is 220520609. The reversal of 220520606 is 606025022.

It is a happy number.

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 (220520603) and next prime (220520609).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220520603) 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 as a sum of consecutive naturals, namely, 55130150 + ... + 55130153.

It is an arithmetic number, because the mean of its divisors is an integer number (82695228).

Almost surely, 2^220520606 is an apocalyptic number.

220520606 is a deficient number, since it is larger than the sum of its proper divisors (110260306).

220520606 is a wasteful number, since it uses less digits than its factorization.

220520606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110260305.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 220520606 is about 14849.9362288193. The cubic root of 220520606 is about 604.1568803636.

Adding to 220520606 its reverse (606025022), we get a palindrome (826545628).

The spelling of 220520606 in words is "two hundred twenty million, five hundred twenty thousand, six hundred six".