223206 has 8 divisors (see below), whose sum is σ = 446424. Its totient is φ = 74400.

The previous prime is 223151. The next prime is 223207. The reversal of 223206 is 602322.

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

223206 is an admirable number.

It is a super-3 number, since 3×223206³ = 33360983761277448, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18595 + ... + 18606.

It is an arithmetic number, because the mean of its divisors is an integer number (55803).

2²²³²⁰⁶ is an apocalyptic number.

223206 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223206 is a wasteful number, since it uses less digits than its factorization.

223206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37206.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 223206 is about 472.4468224044. The cubic root of 223206 is about 60.6599369959.

Adding to 223206 its reverse (602322), we get a palindrome (825528).

The spelling of 223206 in words is "two hundred twenty-three thousand, two hundred six".