12648191 has 6 divisors (see below), whose sum is σ = 13000680. Its totient is φ = 12305016.

The previous prime is 12648173. The next prime is 12648239. The reversal of 12648191 is 19184621.

It is not a de Polignac number, because 12648191 - 2⁶ = 12648127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12648151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3251 + ... + 5988.

It is an arithmetic number, because the mean of its divisors is an integer number (2166780).

Almost surely, 2^12648191 is an apocalyptic number.

12648191 is a deficient number, since it is larger than the sum of its proper divisors (352489).

12648191 is an frugal number, since it uses more digits than its factorization.

12648191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9313 (or 9276 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 12648191 is about 3556.4295297391. The cubic root of 12648191 is about 232.9929633713.

The spelling of 12648191 in words is "twelve million, six hundred forty-eight thousand, one hundred ninety-one".