23646 has 16 divisors (see below), whose sum is σ = 54144. Its totient is φ = 6744.

The previous prime is 23633. The next prime is 23663. The reversal of 23646 is 64632.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

23646 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240 + ... + 323.

It is an arithmetic number, because the mean of its divisors is an integer number (3384).

2²³⁶⁴⁶ is an apocalyptic number.

23646 is an abundant number, since it is smaller than the sum of its proper divisors (30498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27072).

23646 is a wasteful number, since it uses less digits than its factorization.

23646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575.

The product of its digits is 864, while the sum is 21.

The square root of 23646 is about 153.7725593206. The cubic root of 23646 is about 28.7024671401.

It can be divided in two parts, 236 and 46, that added together give a palindrome (282).

The spelling of 23646 in words is "twenty-three thousand, six hundred forty-six".