23206637 has 2 divisors, whose sum is σ = 23206638. Its totient is φ = 23206636.

The previous prime is 23206597. The next prime is 23206639. The reversal of 23206637 is 73660232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23174596 + 32041 = 4814^2 + 179^2 .

It is a cyclic number.

It is not a de Polignac number, because 23206637 - 2¹⁰ = 23205613 is a prime.

Together with 23206639, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23206639) 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 as a sum of consecutive naturals, namely, 11603318 + 11603319.

It is an arithmetic number, because the mean of its divisors is an integer number (11603319).

Almost surely, 2^23206637 is an apocalyptic number.

It is an amenable number.

23206637 is a deficient number, since it is larger than the sum of its proper divisors (1).

23206637 is an equidigital number, since it uses as much as digits as its factorization.

23206637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 23206637 is about 4817.3267483118. The cubic root of 23206637 is about 285.2358241008.

Adding to 23206637 its reverse (73660232), we get a palindrome (96866869).

The spelling of 23206637 in words is "twenty-three million, two hundred six thousand, six hundred thirty-seven".