23000565 has 16 divisors (see below), whose sum is σ = 42058368. Its totient is φ = 10514496.

The previous prime is 23000563. The next prime is 23000573. The reversal of 23000565 is 56500032.

It is not a de Polignac number, because 23000565 - 2¹ = 23000563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23000563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109422 + ... + 109631.

It is an arithmetic number, because the mean of its divisors is an integer number (2628648).

Almost surely, 2^23000565 is an apocalyptic number.

It is an amenable number.

23000565 is a deficient number, since it is larger than the sum of its proper divisors (19057803).

23000565 is a wasteful number, since it uses less digits than its factorization.

23000565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219068.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 23000565 is about 4795.8904282729. The cubic root of 23000565 is about 284.3890266398.

Adding to 23000565 its reverse (56500032), we get a palindrome (79500597).

The spelling of 23000565 in words is "twenty-three million, five hundred sixty-five", and thus it is an aban number.