12072643 has 4 divisors (see below), whose sum is σ = 13170168. Its totient is φ = 10975120.

The previous prime is 12072617. The next prime is 12072649. The reversal of 12072643 is 34627021.

12072643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12072643 - 2⁵ = 12072611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12072649) 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, 548746 + ... + 548767.

It is an arithmetic number, because the mean of its divisors is an integer number (3292542).

Almost surely, 2^12072643 is an apocalyptic number.

12072643 is a deficient number, since it is larger than the sum of its proper divisors (1097525).

12072643 is a wasteful number, since it uses less digits than its factorization.

12072643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097524.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 12072643 is about 3474.5709087598. The cubic root of 12072643 is about 229.4038943027.

Adding to 12072643 its reverse (34627021), we get a palindrome (46699664).

The spelling of 12072643 in words is "twelve million, seventy-two thousand, six hundred forty-three".