220166 has 4 divisors (see below), whose sum is σ = 330252. Its totient is φ = 110082.

The previous prime is 220163. The next prime is 220169. The reversal of 220166 is 661022.

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

It is an interprime number because it is at equal distance from previous prime (220163) and next prime (220169).

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 220166.

It is not an unprimeable number, because it can be changed into a prime (220163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55040 + ... + 55043.

It is an arithmetic number, because the mean of its divisors is an integer number (82563).

2²²⁰¹⁶⁶ is an apocalyptic number.

220166 is a deficient number, since it is larger than the sum of its proper divisors (110086).

220166 is a wasteful number, since it uses less digits than its factorization.

220166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110085.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 220166 is about 469.2184992091. The cubic root of 220166 is about 60.3832870444.

Subtracting from 220166 its product of nonzero digits (144), we obtain a palindrome (220022).

Adding to 220166 its reverse (661022), we get a palindrome (881188).

It can be divided in two parts, 22016 and 6, that added together give a palindrome (22022).

The spelling of 220166 in words is "two hundred twenty thousand, one hundred sixty-six".