23565663 has 12 divisors (see below), whose sum is σ = 37133928. Its totient is φ = 14282160.

The previous prime is 23565613. The next prime is 23565667. The reversal of 23565663 is 36656532.

It is not a de Polignac number, because 23565663 - 2⁶ = 23565599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23565667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118920 + ... + 119117.

It is an arithmetic number, because the mean of its divisors is an integer number (3094494).

Almost surely, 2^23565663 is an apocalyptic number.

23565663 is a deficient number, since it is larger than the sum of its proper divisors (13568265).

23565663 is a wasteful number, since it uses less digits than its factorization.

23565663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238054 (or 238051 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

The square root of 23565663 is about 4854.4477543795. The cubic root of 23565663 is about 286.6992482948.

The spelling of 23565663 in words is "twenty-three million, five hundred sixty-five thousand, six hundred sixty-three".