23505665 has 8 divisors (see below), whose sum is σ = 28233600. Its totient is φ = 18786672.

The previous prime is 23505661. The next prime is 23505667. The reversal of 23505665 is 56650532.

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 23505665 - 2² = 23505661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23505661) 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 7 ways as a sum of consecutive naturals, for example, 7112 + ... + 9878.

It is an arithmetic number, because the mean of its divisors is an integer number (3529200).

Almost surely, 2^23505665 is an apocalyptic number.

It is an amenable number.

23505665 is a deficient number, since it is larger than the sum of its proper divisors (4727935).

23505665 is a wasteful number, since it uses less digits than its factorization.

23505665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 23505665 is about 4848.2641223432. The cubic root of 23505665 is about 286.4557301391.

The spelling of 23505665 in words is "twenty-three million, five hundred five thousand, six hundred sixty-five".