236664161 has 2 divisors, whose sum is σ = 236664162. Its totient is φ = 236664160.

The previous prime is 236664143. The next prime is 236664187. The reversal of 236664161 is 161466632.

236664161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234243025 + 2421136 = 15305^2 + 1556^2 .

It is a cyclic number.

It is not a de Polignac number, because 236664161 - 2⁶ = 236664097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (236664061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118332080 + 118332081.

It is an arithmetic number, because the mean of its divisors is an integer number (118332081).

Almost surely, 2^236664161 is an apocalyptic number.

It is an amenable number.

236664161 is a deficient number, since it is larger than the sum of its proper divisors (1).

236664161 is an equidigital number, since it uses as much as digits as its factorization.

236664161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 236664161 is about 15383.8929078436. The cubic root of 236664161 is about 618.5538276044.

The spelling of 236664161 in words is "two hundred thirty-six million, six hundred sixty-four thousand, one hundred sixty-one".