23633641 has 2 divisors, whose sum is σ = 23633642. Its totient is φ = 23633640.

The previous prime is 23633633. The next prime is 23633693. The reversal of 23633641 is 14633632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23001616 + 632025 = 4796^2 + 795^2 .

It is a cyclic number.

It is not a de Polignac number, because 23633641 - 2³ = 23633633 is a prime.

It is not a weakly prime, because it can be changed into another prime (23633341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11816820 + 11816821.

It is an arithmetic number, because the mean of its divisors is an integer number (11816821).

Almost surely, 2^23633641 is an apocalyptic number.

It is an amenable number.

23633641 is a deficient number, since it is larger than the sum of its proper divisors (1).

23633641 is an equidigital number, since it uses as much as digits as its factorization.

23633641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 28.

The square root of 23633641 is about 4861.4443327061. Note that the first 3 decimals coincide. The cubic root of 23633641 is about 286.9746565132.

Subtracting from 23633641 its reverse (14633632), we obtain a palindrome (9000009).

The spelling of 23633641 in words is "twenty-three million, six hundred thirty-three thousand, six hundred forty-one".