12768791 has 4 divisors (see below), whose sum is σ = 14592912. Its totient is φ = 10944672.

The previous prime is 12768781. The next prime is 12768797. The reversal of 12768791 is 19786721.

12768791 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 a de Polignac number, because none of the positive numbers 2^k-12768791 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 (12768797) 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, 912050 + ... + 912063.

It is an arithmetic number, because the mean of its divisors is an integer number (3648228).

Almost surely, 2^12768791 is an apocalyptic number.

12768791 is a deficient number, since it is larger than the sum of its proper divisors (1824121).

12768791 is an equidigital number, since it uses as much as digits as its factorization.

12768791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824120.

The product of its digits is 42336, while the sum is 41.

The square root of 12768791 is about 3573.3445117984. The cubic root of 12768791 is about 233.7311483553.

The spelling of 12768791 in words is "twelve million, seven hundred sixty-eight thousand, seven hundred ninety-one".