636223 has 8 divisors (see below), whose sum is σ = 735392. Its totient is φ = 539136.

The previous prime is 636217. The next prime is 636241. The reversal of 636223 is 322636.

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 636223 - 2⁹ = 635711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 636194 and 636203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211 + ... + 1147.

It is an arithmetic number, because the mean of its divisors is an integer number (91924).

2⁶³⁶²²³ is an apocalyptic number.

636223 is a deficient number, since it is larger than the sum of its proper divisors (99169).

636223 is an equidigital number, since it uses as much as digits as its factorization.

636223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041.

The product of its digits is 1296, while the sum is 22.

The square root of 636223 is about 797.6358818408. The cubic root of 636223 is about 86.0075259323.

Adding to 636223 its reverse (322636), we get a palindrome (958859).

The spelling of 636223 in words is "six hundred thirty-six thousand, two hundred twenty-three".