22660661 has 4 divisors (see below), whose sum is σ = 23044800. Its totient is φ = 22276524.

The previous prime is 22660639. The next prime is 22660667. The reversal of 22660661 is 16606622.

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 22660661 - 2¹⁴ = 22644277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22660667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191981 + ... + 192098.

It is an arithmetic number, because the mean of its divisors is an integer number (5761200).

Almost surely, 2^22660661 is an apocalyptic number.

It is an amenable number.

22660661 is a deficient number, since it is larger than the sum of its proper divisors (384139).

22660661 is an equidigital number, since it uses as much as digits as its factorization.

22660661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384138.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 22660661 is about 4760.3215227545. The cubic root of 22660661 is about 282.9811613692.

The spelling of 22660661 in words is "twenty-two million, six hundred sixty thousand, six hundred sixty-one".