23623559 has 2 divisors, whose sum is σ = 23623560. Its totient is φ = 23623558.

The previous prime is 23623549. The next prime is 23623571. The reversal of 23623559 is 95532632.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23623559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23623529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11811779 + 11811780.

It is an arithmetic number, because the mean of its divisors is an integer number (11811780).

Almost surely, 2^23623559 is an apocalyptic number.

23623559 is a deficient number, since it is larger than the sum of its proper divisors (1).

23623559 is an equidigital number, since it uses as much as digits as its factorization.

23623559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 35.

The square root of 23623559 is about 4860.4072874606. The cubic root of 23623559 is about 286.9338433632.

The spelling of 23623559 in words is "twenty-three million, six hundred twenty-three thousand, five hundred fifty-nine".