22085689 has 4 divisors (see below), whose sum is σ = 22288420. Its totient is φ = 21882960.

The previous prime is 22085677. The next prime is 22085731. The reversal of 22085689 is 98658022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98658022 = 2 ⋅49329011.

It can be written as a sum of positive squares in 2 ways, for example, as 19954089 + 2131600 = 4467^2 + 1460^2 .

It is a cyclic number.

It is not a de Polignac number, because 22085689 - 2⁹ = 22085177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22085659) 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, 101202 + ... + 101419.

It is an arithmetic number, because the mean of its divisors is an integer number (5572105).

Almost surely, 2^22085689 is an apocalyptic number.

It is an amenable number.

22085689 is a deficient number, since it is larger than the sum of its proper divisors (202731).

22085689 is a wasteful number, since it uses less digits than its factorization.

22085689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202730.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 22085689 is about 4699.5413606011. The cubic root of 22085689 is about 280.5672556257.

The spelling of 22085689 in words is "twenty-two million, eighty-five thousand, six hundred eighty-nine".