12768771 has 4 divisors (see below), whose sum is σ = 17025032. Its totient is φ = 8512512.

The previous prime is 12768761. The next prime is 12768773. The reversal of 12768771 is 17786721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17786721 = 3 ⋅5928907.

It is not a de Polignac number, because 12768771 - 2⁵ = 12768739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12768773) 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, 2128126 + ... + 2128131.

It is an arithmetic number, because the mean of its divisors is an integer number (4256258).

Almost surely, 2^12768771 is an apocalyptic number.

12768771 is a deficient number, since it is larger than the sum of its proper divisors (4256261).

12768771 is an equidigital number, since it uses as much as digits as its factorization.

12768771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256260.

The product of its digits is 32928, while the sum is 39.

The square root of 12768771 is about 3573.3417132986. The cubic root of 12768771 is about 233.7310263227.

The spelling of 12768771 in words is "twelve million, seven hundred sixty-eight thousand, seven hundred seventy-one".