220066069 has 6 divisors (see below), whose sum is σ = 220781634. Its totient is φ = 219352320.

The previous prime is 220066061. The next prime is 220066073. The reversal of 220066069 is 960660022.

It can be written as a sum of positive squares in 3 ways, for example, as 198443569 + 21622500 = 14087^2 + 4650^2 .

It is not a de Polignac number, because 220066069 - 2³ = 220066061 is a prime.

It is a super-2 number, since 2×220066069² = 96858149450225522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220066069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220066061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 332599 + ... + 333259.

It is an arithmetic number, because the mean of its divisors is an integer number (36796939).

Almost surely, 2^220066069 is an apocalyptic number.

It is an amenable number.

220066069 is a deficient number, since it is larger than the sum of its proper divisors (715565).

220066069 is an frugal number, since it uses more digits than its factorization.

220066069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815 (or 1238 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 220066069 is about 14834.6239925385. The cubic root of 220066069 is about 603.7414988508.

The spelling of 220066069 in words is "two hundred twenty million, sixty-six thousand, sixty-nine".