22665329 has 4 divisors (see below), whose sum is σ = 22676340. Its totient is φ = 22654320.

The previous prime is 22665323. The next prime is 22665353. The reversal of 22665329 is 92356622.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 14554225 + 8111104 = 3815^2 + 2848^2 .

It is a cyclic number.

It is not a de Polignac number, because 22665329 - 2¹⁶ = 22599793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22665323) 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, 1394 + ... + 6875.

It is an arithmetic number, because the mean of its divisors is an integer number (5669085).

Almost surely, 2^22665329 is an apocalyptic number.

It is an amenable number.

22665329 is a deficient number, since it is larger than the sum of its proper divisors (11011).

22665329 is an equidigital number, since it uses as much as digits as its factorization.

22665329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11010.

The product of its digits is 38880, while the sum is 35.

The square root of 22665329 is about 4760.8118005231. The cubic root of 22665329 is about 283.0005910079. Note that the first 3 decimals are identical.

The spelling of 22665329 in words is "twenty-two million, six hundred sixty-five thousand, three hundred twenty-nine".