223066 has 4 divisors (see below), whose sum is σ = 334602. Its totient is φ = 111532.

The previous prime is 223063. The next prime is 223087. The reversal of 223066 is 660322.

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

It can be written as a sum of positive squares in only one way, i.e., 221841 + 1225 = 471^2 + 35^2 .

It is not an unprimeable number, because it can be changed into a prime (223061) 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, 55765 + ... + 55768.

2²²³⁰⁶⁶ is an apocalyptic number.

223066 is a deficient number, since it is larger than the sum of its proper divisors (111536).

223066 is a wasteful number, since it uses less digits than its factorization.

223066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111535.

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

The square root of 223066 is about 472.2986343406. The cubic root of 223066 is about 60.6472519018.

Adding to 223066 its reverse (660322), we get a palindrome (883388).

The spelling of 223066 in words is "two hundred twenty-three thousand, sixty-six".