23621641 has 8 divisors (see below), whose sum is σ = 23963040. Its totient is φ = 23282688.

The previous prime is 23621639. The next prime is 23621657. The reversal of 23621641 is 14612632.

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

It is a cyclic number.

It is not a de Polignac number, because 23621641 - 2¹ = 23621639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23621671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27070 + ... + 27928.

It is an arithmetic number, because the mean of its divisors is an integer number (2995380).

Almost surely, 2^23621641 is an apocalyptic number.

It is an amenable number.

23621641 is a deficient number, since it is larger than the sum of its proper divisors (341399).

23621641 is a wasteful number, since it uses less digits than its factorization.

23621641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223.

The product of its digits is 1728, while the sum is 25.

The square root of 23621641 is about 4860.2099748879. The cubic root of 23621641 is about 286.9260777536.

Subtracting from 23621641 its reverse (14612632), we obtain a palindrome (9009009).

The spelling of 23621641 in words is "twenty-three million, six hundred twenty-one thousand, six hundred forty-one".