23305663 has 2 divisors, whose sum is σ = 23305664. Its totient is φ = 23305662.

The previous prime is 23305651. The next prime is 23305669. The reversal of 23305663 is 36650332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23305663 - 2⁵ = 23305631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23305669) 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, 11652831 + 11652832.

It is an arithmetic number, because the mean of its divisors is an integer number (11652832).

Almost surely, 2^23305663 is an apocalyptic number.

23305663 is a deficient number, since it is larger than the sum of its proper divisors (1).

23305663 is an equidigital number, since it uses as much as digits as its factorization.

23305663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 28.

The square root of 23305663 is about 4827.5939141564. The cubic root of 23305663 is about 285.6409622440.

Adding to 23305663 its reverse (36650332), we get a palindrome (59955995).

The spelling of 23305663 in words is "twenty-three million, three hundred five thousand, six hundred sixty-three".