23668409 has 8 divisors (see below), whose sum is σ = 23950080. Its totient is φ = 23388736.

The previous prime is 23668399. The next prime is 23668417. The reversal of 23668409 is 90486632.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23668409 - 2⁸ = 23668153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23668459) 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 7 ways as a sum of consecutive naturals, for example, 39617 + ... + 40209.

It is an arithmetic number, because the mean of its divisors is an integer number (2993760).

Almost surely, 2^23668409 is an apocalyptic number.

It is an amenable number.

23668409 is a deficient number, since it is larger than the sum of its proper divisors (281671).

23668409 is a wasteful number, since it uses less digits than its factorization.

23668409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 23668409 is about 4865.0189105491. The cubic root of 23668409 is about 287.1153125964.

The spelling of 23668409 in words is "twenty-three million, six hundred sixty-eight thousand, four hundred nine".