23985166 has 4 divisors (see below), whose sum is σ = 35977752. Its totient is φ = 11992582.

The previous prime is 23985161. The next prime is 23985167. The reversal of 23985166 is 66158932.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23985161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5996290 + ... + 5996293.

It is an arithmetic number, because the mean of its divisors is an integer number (8994438).

Almost surely, 2^23985166 is an apocalyptic number.

23985166 is a deficient number, since it is larger than the sum of its proper divisors (11992586).

23985166 is a wasteful number, since it uses less digits than its factorization.

23985166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11992585.

The product of its digits is 77760, while the sum is 40.

The square root of 23985166 is about 4897.4652627660. The cubic root of 23985166 is about 288.3904731185.

The spelling of 23985166 in words is "twenty-three million, nine hundred eighty-five thousand, one hundred sixty-six".