223632081 has 12 divisors (see below), whose sum is σ = 330903300. Its totient is φ = 145451520.

The previous prime is 223632067. The next prime is 223632091. The reversal of 223632081 is 180236322.

223632081 is a `hidden beast` number, since 2 + 23 + 632 + 0 + 8 + 1 = 666.

223632081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 60840000 + 162792081 = 7800^2 + 12759^2 .

It is not a de Polignac number, because 223632081 - 2⁵ = 223632049 is a prime.

It is a super-2 number, since 2×223632081² = 100022615304781122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223632091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 302656 + ... + 303393.

It is an arithmetic number, because the mean of its divisors is an integer number (27575275).

Almost surely, 2^223632081 is an apocalyptic number.

It is an amenable number.

223632081 is a deficient number, since it is larger than the sum of its proper divisors (107271219).

223632081 is a wasteful number, since it uses less digits than its factorization.

223632081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606096 (or 606093 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 223632081 is about 14954.3331847328. Note that the first 3 decimals coincide. The cubic root of 223632081 is about 606.9851065738.

The spelling of 223632081 in words is "two hundred twenty-three million, six hundred thirty-two thousand, eighty-one".