220066443 has 8 divisors (see below), whose sum is σ = 326024400. Its totient is φ = 146710944.

The previous prime is 220066439. The next prime is 220066477. The reversal of 220066443 is 344660022.

It is not a de Polignac number, because 220066443 - 2² = 220066439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8150609 = 220066443 / (2 + 2 + 0 + 0 + 6 + 6 + 4 + 4 + 3).

It is not an unprimeable number, because it can be changed into a prime (220066423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4075278 + ... + 4075331.

It is an arithmetic number, because the mean of its divisors is an integer number (40753050).

Almost surely, 2^220066443 is an apocalyptic number.

220066443 is a deficient number, since it is larger than the sum of its proper divisors (105957957).

220066443 is an equidigital number, since it uses as much as digits as its factorization.

220066443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8150618 (or 8150612 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 220066443 is about 14834.6365981779. The cubic root of 220066443 is about 603.7418408681.

The spelling of 220066443 in words is "two hundred twenty million, sixty-six thousand, four hundred forty-three".