22285865 has 8 divisors (see below), whose sum is σ = 30563520. Its totient is φ = 15281712.

The previous prime is 22285859. The next prime is 22285871. The reversal of 22285865 is 56858222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22285859) and next prime (22285871).

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 22285865 - 2²⁰ = 21237289 is a prime.

It is a Curzon 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, 318335 + ... + 318404.

It is an arithmetic number, because the mean of its divisors is an integer number (3820440).

Almost surely, 2^22285865 is an apocalyptic number.

It is an amenable number.

22285865 is a deficient number, since it is larger than the sum of its proper divisors (8277655).

22285865 is an equidigital number, since it uses as much as digits as its factorization.

22285865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636751.

The product of its digits is 76800, while the sum is 38.

The square root of 22285865 is about 4720.7907176658. The cubic root of 22285865 is about 281.4123579444.

The spelling of 22285865 in words is "twenty-two million, two hundred eighty-five thousand, eight hundred sixty-five".