23020565 has 8 divisors (see below), whose sum is σ = 27694680. Its totient is φ = 18369792.

The previous prime is 23020511. The next prime is 23020573. The reversal of 23020565 is 56502032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10903204 + 12117361 = 3302^2 + 3481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23020565 - 2¹⁶ = 22955029 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23020565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3584 + ... + 7673.

It is an arithmetic number, because the mean of its divisors is an integer number (3461835).

Almost surely, 2^23020565 is an apocalyptic number.

It is an amenable number.

23020565 is a deficient number, since it is larger than the sum of its proper divisors (4674115).

23020565 is a wasteful number, since it uses less digits than its factorization.

23020565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11671.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 23020565 is about 4797.9750937244. The cubic root of 23020565 is about 284.4714323363.

Adding to 23020565 its reverse (56502032), we get a palindrome (79522597).

The spelling of 23020565 in words is "twenty-three million, twenty thousand, five hundred sixty-five".