23426563 has 4 divisors (see below), whose sum is σ = 24659560. Its totient is φ = 22193568.

The previous prime is 23426549. The next prime is 23426569. The reversal of 23426563 is 36562432.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23426563 - 2⁵ = 23426531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23426569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616470 + ... + 616507.

It is an arithmetic number, because the mean of its divisors is an integer number (6164890).

Almost surely, 2^23426563 is an apocalyptic number.

23426563 is a deficient number, since it is larger than the sum of its proper divisors (1232997).

23426563 is a wasteful number, since it uses less digits than its factorization.

23426563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232996.

The product of its digits is 25920, while the sum is 31.

The square root of 23426563 is about 4840.0994824487. The cubic root of 23426563 is about 286.1340390824.

Adding to 23426563 its reverse (36562432), we get a palindrome (59988995).

The spelling of 23426563 in words is "twenty-three million, four hundred twenty-six thousand, five hundred sixty-three".