23641 has 4 divisors (see below), whose sum is σ = 24192. Its totient is φ = 23092.

The previous prime is 23633. The next prime is 23663. The reversal of 23641 is 14632.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23641 - 2³ = 23633 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (23671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205 + ... + 298.

It is an arithmetic number, because the mean of its divisors is an integer number (6048).

2²³⁶⁴¹ is an apocalyptic number.

It is an amenable number.

23641 is a deficient number, since it is larger than the sum of its proper divisors (551).

23641 is an equidigital number, since it uses as much as digits as its factorization.

23641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550.

The product of its digits is 144, while the sum is 16.

The square root of 23641 is about 153.7563006839. The cubic root of 23641 is about 28.7004439304.

Subtracting from 23641 its reverse (14632), we obtain a palindrome (9009).

The spelling of 23641 in words is "twenty-three thousand, six hundred forty-one".