220026605 has 8 divisors (see below), whose sum is σ = 271168152. Its totient is φ = 171263808.

The previous prime is 220026553. The next prime is 220026607. The reversal of 220026605 is 506620022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34140649 + 185885956 = 5843^2 + 13634^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220026605 - 2¹⁶ = 219961069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220026607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594482 + ... + 594851.

It is an arithmetic number, because the mean of its divisors is an integer number (33896019).

Almost surely, 2^220026605 is an apocalyptic number.

It is an amenable number.

220026605 is a deficient number, since it is larger than the sum of its proper divisors (51141547).

220026605 is a wasteful number, since it uses less digits than its factorization.

220026605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189375.

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

The square root of 220026605 is about 14833.2938014454. The cubic root of 220026605 is about 603.7054074488.

Adding to 220026605 its reverse (506620022), we get a palindrome (726646627).

The spelling of 220026605 in words is "two hundred twenty million, twenty-six thousand, six hundred five".