220366 has 4 divisors (see below), whose sum is σ = 330552. Its totient is φ = 110182.

The previous prime is 220361. The next prime is 220369. The reversal of 220366 is 663022.

220366 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 663022 = 2 ⋅331511.

It is a super-2 number, since 2×220366² = 97122347912, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55090 + ... + 55093.

It is an arithmetic number, because the mean of its divisors is an integer number (82638).

2²²⁰³⁶⁶ is an apocalyptic number.

220366 is a deficient number, since it is larger than the sum of its proper divisors (110186).

220366 is a wasteful number, since it uses less digits than its factorization.

220366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110185.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 220366 is about 469.4315711581. The cubic root of 220366 is about 60.4015656802.

Adding to 220366 its reverse (663022), we get a palindrome (883388).

The spelling of 220366 in words is "two hundred twenty thousand, three hundred sixty-six".