220320166 has 16 divisors (see below), whose sum is σ = 366436368. Its totient is φ = 98503200.

The previous prime is 220320127. The next prime is 220320167. The reversal of 220320166 is 661023022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220320167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80745 + ... + 83428.

It is an arithmetic number, because the mean of its divisors is an integer number (22902273).

Almost surely, 2^220320166 is an apocalyptic number.

220320166 is a deficient number, since it is larger than the sum of its proper divisors (146116202).

220320166 is a wasteful number, since it uses less digits than its factorization.

220320166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164247.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 220320166 is about 14843.1858440161. The cubic root of 220320166 is about 603.9737774239.

Adding to 220320166 its reverse (661023022), we get a palindrome (881343188).

The spelling of 220320166 in words is "two hundred twenty million, three hundred twenty thousand, one hundred sixty-six".