22889665 has 4 divisors (see below), whose sum is σ = 27467604. Its totient is φ = 18311728.

The previous prime is 22889663. The next prime is 22889681. The reversal of 22889665 is 56698822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17581249 + 5308416 = 4193^2 + 2304^2 .

It is a cyclic number.

It is not a de Polignac number, because 22889665 - 2¹ = 22889663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22889663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2288962 + ... + 2288971.

It is an arithmetic number, because the mean of its divisors is an integer number (6866901).

Almost surely, 2^22889665 is an apocalyptic number.

It is an amenable number.

22889665 is a deficient number, since it is larger than the sum of its proper divisors (4577939).

22889665 is an equidigital number, since it uses as much as digits as its factorization.

22889665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4577938.

The product of its digits is 414720, while the sum is 46.

The square root of 22889665 is about 4784.3144754500. The cubic root of 22889665 is about 283.9312180518.

The spelling of 22889665 in words is "twenty-two million, eight hundred eighty-nine thousand, six hundred sixty-five".