23668009 has 4 divisors (see below), whose sum is σ = 23682816. Its totient is φ = 23653204.

The previous prime is 23668003. The next prime is 23668019. The reversal of 23668009 is 90086632.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23668009 - 2⁷ = 23667881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23668003) 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, 4669 + ... + 8314.

It is an arithmetic number, because the mean of its divisors is an integer number (5920704).

Almost surely, 2^23668009 is an apocalyptic number.

It is an amenable number.

23668009 is a deficient number, since it is larger than the sum of its proper divisors (14807).

23668009 is a wasteful number, since it uses less digits than its factorization.

23668009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14806.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 23668009 is about 4864.9778005660. The cubic root of 23668009 is about 287.1136951553.

The spelling of 23668009 in words is "twenty-three million, six hundred sixty-eight thousand, nine".