236664061 has 2 divisors, whose sum is σ = 236664062. Its totient is φ = 236664060.

The previous prime is 236664059. The next prime is 236664067. The reversal of 236664061 is 160466632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158004900 + 78659161 = 12570^2 + 8869^2 .

It is a cyclic number.

It is not a de Polignac number, because 236664061 - 2¹ = 236664059 is a prime.

Together with 236664059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (236664067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118332030 + 118332031.

It is an arithmetic number, because the mean of its divisors is an integer number (118332031).

Almost surely, 2^236664061 is an apocalyptic number.

It is an amenable number.

236664061 is a deficient number, since it is larger than the sum of its proper divisors (1).

236664061 is an equidigital number, since it uses as much as digits as its factorization.

236664061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 236664061 is about 15383.8896576906. The cubic root of 236664061 is about 618.5537404832.

The spelling of 236664061 in words is "two hundred thirty-six million, six hundred sixty-four thousand, sixty-one".