22660891 has 8 divisors (see below), whose sum is σ = 24798384. Its totient is φ = 20536320.

The previous prime is 22660889. The next prime is 22660903. The reversal of 22660891 is 19806622.

It is a happy number.

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 22660891 - 2¹ = 22660889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22660801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651 + ... + 6763.

It is an arithmetic number, because the mean of its divisors is an integer number (3099798).

Almost surely, 2^22660891 is an apocalyptic number.

22660891 is a deficient number, since it is larger than the sum of its proper divisors (2137493).

22660891 is a wasteful number, since it uses less digits than its factorization.

22660891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6461.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 22660891 is about 4760.3456807253. The cubic root of 22660891 is about 282.9821187618.

The spelling of 22660891 in words is "twenty-two million, six hundred sixty thousand, eight hundred ninety-one".