23085565 has 4 divisors (see below), whose sum is σ = 27702684. Its totient is φ = 18468448.

The previous prime is 23085529. The next prime is 23085599. The reversal of 23085565 is 56558032.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14945956 + 8139609 = 3866^2 + 2853^2 .

It is a cyclic number.

It is not a de Polignac number, because 23085565 - 2⁹ = 23085053 is a prime.

It is a super-2 number, since 2×23085565² = 1065886622738450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23085565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2308552 + ... + 2308561.

It is an arithmetic number, because the mean of its divisors is an integer number (6925671).

Almost surely, 2^23085565 is an apocalyptic number.

It is an amenable number.

23085565 is a deficient number, since it is larger than the sum of its proper divisors (4617119).

23085565 is an equidigital number, since it uses as much as digits as its factorization.

23085565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617118.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 23085565 is about 4804.7440098303. The cubic root of 23085565 is about 284.7389216759.

The spelling of 23085565 in words is "twenty-three million, eighty-five thousand, five hundred sixty-five".