23788665 has 24 divisors (see below), whose sum is σ = 43405440. Its totient is φ = 12019104.

The previous prime is 23788663. The next prime is 23788727. The reversal of 23788665 is 56688732.

It is not a de Polignac number, because 23788665 - 2¹ = 23788663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23788665.

It is not an unprimeable number, because it can be changed into a prime (23788663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13057 + ... + 14766.

It is an arithmetic number, because the mean of its divisors is an integer number (1808560).

Almost surely, 2^23788665 is an apocalyptic number.

It is an amenable number.

23788665 is a deficient number, since it is larger than the sum of its proper divisors (19616775).

23788665 is a wasteful number, since it uses less digits than its factorization.

23788665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27853 (or 27850 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 23788665 is about 4877.3625044690. The cubic root of 23788665 is about 287.6007561157.

The spelling of 23788665 in words is "twenty-three million, seven hundred eighty-eight thousand, six hundred sixty-five".