223663261 has 8 divisors (see below), whose sum is σ = 230905784. Its totient is φ = 216483840.

The previous prime is 223663249. The next prime is 223663291. The reversal of 223663261 is 162366322.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 52838361 + 170824900 = 7269^2 + 13070^2 .

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 223663261 - 2⁵ = 223663229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223663291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8520 + ... + 22801.

It is an arithmetic number, because the mean of its divisors is an integer number (28863223).

Almost surely, 2^223663261 is an apocalyptic number.

It is an amenable number.

223663261 is a deficient number, since it is larger than the sum of its proper divisors (7242523).

223663261 is a wasteful number, since it uses less digits than its factorization.

223663261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31551.

The product of its digits is 15552, while the sum is 31.

The square root of 223663261 is about 14955.3756555962. The cubic root of 223663261 is about 607.0133149836.

The spelling of 223663261 in words is "two hundred twenty-three million, six hundred sixty-three thousand, two hundred sixty-one".