220066 has 16 divisors (see below), whose sum is σ = 411840. Its totient is φ = 85680.

The previous prime is 220063. The next prime is 220123. The reversal of 220066 is 660022.

220066 is a modest number, since divided by 66 gives 22 as remainder.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220063) 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, 561 + ... + 868.

It is an arithmetic number, because the mean of its divisors is an integer number (25740).

2²²⁰⁰⁶⁶ is an apocalyptic number.

220066 is a deficient number, since it is larger than the sum of its proper divisors (191774).

220066 is a wasteful number, since it uses less digits than its factorization.

220066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 220066 is about 469.1119269428. Note that the first 3 decimals coincide. The cubic root of 220066 is about 60.3741435751.

Adding to 220066 its reverse (660022), we get a palindrome (880088).

The spelling of 220066 in words is "two hundred twenty thousand, sixty-six".