22661805 has 16 divisors (see below), whose sum is σ = 36854784. Its totient is φ = 11887680.

The previous prime is 22661801. The next prime is 22661809. The reversal of 22661805 is 50816622.

It is an interprime number because it is at equal distance from previous prime (22661801) and next prime (22661809).

It is not a de Polignac number, because 22661805 - 2² = 22661801 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22661801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11469 + ... + 13298.

It is an arithmetic number, because the mean of its divisors is an integer number (2303424).

Almost surely, 2^22661805 is an apocalyptic number.

It is an amenable number.

22661805 is a deficient number, since it is larger than the sum of its proper divisors (14192979).

22661805 is a wasteful number, since it uses less digits than its factorization.

22661805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24836.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 22661805 is about 4760.4416811888. The cubic root of 22661805 is about 282.9859232927.

The spelling of 22661805 in words is "twenty-two million, six hundred sixty-one thousand, eight hundred five".