22660805 has 8 divisors (see below), whose sum is σ = 27219192. Its totient is φ = 18111168.

The previous prime is 22660801. The next prime is 22660811. The reversal of 22660805 is 50806622.

It can be written as a sum of positive squares in 4 ways, for example, as 88804 + 22572001 = 298^2 + 4751^2 .

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 22660805 - 2² = 22660801 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 (22660801) 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 7 ways as a sum of consecutive naturals, for example, 7127 + ... + 9803.

It is an arithmetic number, because the mean of its divisors is an integer number (3402399).

Almost surely, 2^22660805 is an apocalyptic number.

It is an amenable number.

22660805 is a deficient number, since it is larger than the sum of its proper divisors (4558387).

22660805 is a wasteful number, since it uses less digits than its factorization.

22660805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 22660805 is about 4760.3366477593. The cubic root of 22660805 is about 282.9817607810.

The spelling of 22660805 in words is "twenty-two million, six hundred sixty thousand, eight hundred five".