12776897 has 6 divisors (see below), whose sum is σ = 14862978. Its totient is φ = 10951584.

The previous prime is 12776879. The next prime is 12776921. The reversal of 12776897 is 79867721.

12776897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12397441 + 379456 = 3521^2 + 616^2 .

It is not a de Polignac number, because 12776897 - 2⁸ = 12776641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12776807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130328 + ... + 130425.

It is an arithmetic number, because the mean of its divisors is an integer number (2477163).

Almost surely, 2^12776897 is an apocalyptic number.

It is an amenable number.

12776897 is a deficient number, since it is larger than the sum of its proper divisors (2086081).

12776897 is an equidigital number, since it uses as much as digits as its factorization.

12776897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260767 (or 260760 counting only the distinct ones).

The product of its digits is 296352, while the sum is 47.

The square root of 12776897 is about 3574.4785633712. The cubic root of 12776897 is about 233.7805976704.

The spelling of 12776897 in words is "twelve million, seven hundred seventy-six thousand, eight hundred ninety-seven".