12968641 has 4 divisors (see below), whose sum is σ = 14821312. Its totient is φ = 11115972.

The previous prime is 12968639. The next prime is 12968651. The reversal of 12968641 is 14686921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12968641 - 2¹ = 12968639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12968641.

It is not an unprimeable number, because it can be changed into a prime (12968651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926325 + ... + 926338.

It is an arithmetic number, because the mean of its divisors is an integer number (3705328).

Almost surely, 2^12968641 is an apocalyptic number.

It is an amenable number.

12968641 is a deficient number, since it is larger than the sum of its proper divisors (1852671).

12968641 is an equidigital number, since it uses as much as digits as its factorization.

12968641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852670.

The product of its digits is 20736, while the sum is 37.

The square root of 12968641 is about 3601.1999389093. The cubic root of 12968641 is about 234.9442511488.

The spelling of 12968641 in words is "twelve million, nine hundred sixty-eight thousand, six hundred forty-one".