223669 has 8 divisors (see below), whose sum is σ = 241920. Its totient is φ = 206016.

The previous prime is 223667. The next prime is 223679. The reversal of 223669 is 966322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223669 - 2¹ = 223667 is a prime.

It is a super-2 number, since 2×223669² = 100055643122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

223669 is a modest number, since divided by 669 gives 223 as remainder.

It is a plaindrome in base 10.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223667) 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 in 7 ways as a sum of consecutive naturals, for example, 892 + ... + 1114.

It is an arithmetic number, because the mean of its divisors is an integer number (30240).

2²²³⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

223669 is a deficient number, since it is larger than the sum of its proper divisors (18251).

223669 is a wasteful number, since it uses less digits than its factorization.

223669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299.

The product of its digits is 3888, while the sum is 28.

The square root of 223669 is about 472.9365707999. The cubic root of 223669 is about 60.7018506746.

The spelling of 223669 in words is "two hundred twenty-three thousand, six hundred sixty-nine".