22020689 has 4 divisors (see below), whose sum is σ = 22349424. Its totient is φ = 21691956.

The previous prime is 22020673. The next prime is 22020703. The reversal of 22020689 is 98602022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22020689 - 2⁴ = 22020673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22020659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164267 + ... + 164400.

It is an arithmetic number, because the mean of its divisors is an integer number (5587356).

Almost surely, 2^22020689 is an apocalyptic number.

It is an amenable number.

22020689 is a deficient number, since it is larger than the sum of its proper divisors (328735).

22020689 is an equidigital number, since it uses as much as digits as its factorization.

22020689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328734.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 22020689 is about 4692.6206963700. The cubic root of 22020689 is about 280.2917409882.

The spelling of 22020689 in words is "twenty-two million, twenty thousand, six hundred eighty-nine".