22745661 has 16 divisors (see below), whose sum is σ = 31561728. Its totient is φ = 14554800.

The previous prime is 22745659. The next prime is 22745687. The reversal of 22745661 is 16654722.

It is not a de Polignac number, because 22745661 - 2¹ = 22745659 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 (22745651) 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 15 ways as a sum of consecutive naturals, for example, 11250 + ... + 13116.

It is an arithmetic number, because the mean of its divisors is an integer number (1972608).

Almost surely, 2^22745661 is an apocalyptic number.

It is an amenable number.

22745661 is a deficient number, since it is larger than the sum of its proper divisors (8816067).

22745661 is a wasteful number, since it uses less digits than its factorization.

22745661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032.

The product of its digits is 20160, while the sum is 33.

The square root of 22745661 is about 4769.2411346041. The cubic root of 22745661 is about 283.3345400948.

The spelling of 22745661 in words is "twenty-two million, seven hundred forty-five thousand, six hundred sixty-one".