223667 has 2 divisors, whose sum is σ = 223668. Its totient is φ = 223666.

The previous prime is 223637. The next prime is 223679. The reversal of 223667 is 766322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223667 - 2¹⁰ = 222643 is a prime.

It is an Ulam number.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (223637) 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, 111833 + 111834.

It is an arithmetic number, because the mean of its divisors is an integer number (111834).

2²²³⁶⁶⁷ is an apocalyptic number.

223667 is a deficient number, since it is larger than the sum of its proper divisors (1).

223667 is an equidigital number, since it uses as much as digits as its factorization.

223667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 26.

The square root of 223667 is about 472.9344563468. The cubic root of 223667 is about 60.7016697464.

Adding to 223667 its reverse (766322), we get a palindrome (989989).

The spelling of 223667 in words is "two hundred twenty-three thousand, six hundred sixty-seven".