23966 has 8 divisors (see below), whose sum is σ = 37584. Its totient is φ = 11440.

The previous prime is 23957. The next prime is 23971. The reversal of 23966 is 66932.

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

It is a Curzon number.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215 + ... + 306.

It is an arithmetic number, because the mean of its divisors is an integer number (4698).

2²³⁹⁶⁶ is an apocalyptic number.

23966 is a deficient number, since it is larger than the sum of its proper divisors (13618).

23966 is a wasteful number, since it uses less digits than its factorization.

23966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its digits is 1944, while the sum is 26.

The square root of 23966 is about 154.8095604283. The cubic root of 23966 is about 28.8313637229.

Subtracting from 23966 its product of digits (1944), we obtain a palindrome (22022).

It can be divided in two parts, 23 and 966, that added together give a palindrome (989).

The spelling of 23966 in words is "twenty-three thousand, nine hundred sixty-six".