22010689 has 4 divisors (see below), whose sum is σ = 22061956. Its totient is φ = 21959424.

The previous prime is 22010657. The next prime is 22010707. The reversal of 22010689 is 98601022.

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 6210064 + 15800625 = 2492^2 + 3975^2 .

It is a cyclic number.

It is not a de Polignac number, because 22010689 - 2⁵ = 22010657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22010629) 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, 24984 + ... + 25849.

It is an arithmetic number, because the mean of its divisors is an integer number (5515489).

Almost surely, 2^22010689 is an apocalyptic number.

It is an amenable number.

22010689 is a deficient number, since it is larger than the sum of its proper divisors (51267).

22010689 is an equidigital number, since it uses as much as digits as its factorization.

22010689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51266.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 22010689 is about 4691.5550726811. Note that the first 3 decimals coincide. The cubic root of 22010689 is about 280.2493060186.

The spelling of 22010689 in words is "twenty-two million, ten thousand, six hundred eighty-nine".