220064066 has 4 divisors (see below), whose sum is σ = 330096102. Its totient is φ = 110032032.

The previous prime is 220064063. The next prime is 220064081. The reversal of 220064066 is 660460022.

220064066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 208196041 + 11868025 = 14429^2 + 3445^2 .

It is not an unprimeable number, because it can be changed into a prime (220064063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55016015 + ... + 55016018.

Almost surely, 2^220064066 is an apocalyptic number.

220064066 is a deficient number, since it is larger than the sum of its proper divisors (110032036).

220064066 is a wasteful number, since it uses less digits than its factorization.

220064066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110032035.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 220064066 is about 14834.5564814052. The cubic root of 220064066 is about 603.7396671314.

It can be divided in two parts, 2200 and 64066, that added together give a palindrome (66266).

The spelling of 220064066 in words is "two hundred twenty million, sixty-four thousand, sixty-six".