23906563 has 2 divisors, whose sum is σ = 23906564. Its totient is φ = 23906562.

The previous prime is 23906521. The next prime is 23906593. The reversal of 23906563 is 36560932.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23906563 is a prime.

It is not a weakly prime, because it can be changed into another prime (23906513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11953281 + 11953282.

It is an arithmetic number, because the mean of its divisors is an integer number (11953282).

Almost surely, 2^23906563 is an apocalyptic number.

23906563 is a deficient number, since it is larger than the sum of its proper divisors (1).

23906563 is an equidigital number, since it uses as much as digits as its factorization.

23906563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 23906563 is about 4889.4338118028. The cubic root of 23906563 is about 288.0750953543.

The spelling of 23906563 in words is "twenty-three million, nine hundred six thousand, five hundred sixty-three".