23663189 has 24 divisors (see below), whose sum is σ = 27980640. Its totient is φ = 19836000.

The previous prime is 23663179. The next prime is 23663203. The reversal of 23663189 is 98136632.

It is not a de Polignac number, because 23663189 - 2¹² = 23659093 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23663119) 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 23 ways as a sum of consecutive naturals, for example, 234239 + ... + 234339.

It is an arithmetic number, because the mean of its divisors is an integer number (1165860).

Almost surely, 2^23663189 is an apocalyptic number.

It is an amenable number.

23663189 is a deficient number, since it is larger than the sum of its proper divisors (4317451).

23663189 is a wasteful number, since it uses less digits than its factorization.

23663189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 190 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 23663189 is about 4864.4823979536. The cubic root of 23663189 is about 287.0942035571.

It can be divided in two parts, 2366 and 3189, that added together give a palindrome (5555).

The spelling of 23663189 in words is "twenty-three million, six hundred sixty-three thousand, one hundred eighty-nine".