12433643 has 4 divisors (see below), whose sum is σ = 12465360. Its totient is φ = 12401928.

The previous prime is 12433627. The next prime is 12433693. The reversal of 12433643 is 34633421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34633421 = 61 ⋅567761.

It is a cyclic number.

It is not a de Polignac number, because 12433643 - 2⁴ = 12433627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12433693) 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, 15263 + ... + 16056.

It is an arithmetic number, because the mean of its divisors is an integer number (3116340).

Almost surely, 2^12433643 is an apocalyptic number.

12433643 is a deficient number, since it is larger than the sum of its proper divisors (31717).

12433643 is an equidigital number, since it uses as much as digits as its factorization.

12433643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31716.

The product of its digits is 5184, while the sum is 26.

The square root of 12433643 is about 3526.1371215538. The cubic root of 12433643 is about 231.6680436288.

The spelling of 12433643 in words is "twelve million, four hundred thirty-three thousand, six hundred forty-three".