22086861 has 4 divisors (see below), whose sum is σ = 29449152. Its totient is φ = 14724572.

The previous prime is 22086839. The next prime is 22086871. The reversal of 22086861 is 16868022.

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 22086861 - 2⁷ = 22086733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22086871) 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, 3681141 + ... + 3681146.

It is an arithmetic number, because the mean of its divisors is an integer number (7362288).

Almost surely, 2^22086861 is an apocalyptic number.

It is an amenable number.

22086861 is a deficient number, since it is larger than the sum of its proper divisors (7362291).

22086861 is an equidigital number, since it uses as much as digits as its factorization.

22086861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7362290.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 22086861 is about 4699.6660519658. Note that the first 3 decimals coincide. The cubic root of 22086861 is about 280.5722184020.

The spelling of 22086861 in words is "twenty-two million, eighty-six thousand, eight hundred sixty-one".