12777297 has 16 divisors (see below), whose sum is σ = 18486720. Its totient is φ = 7803072.

The previous prime is 12777287. The next prime is 12777299. The reversal of 12777297 is 79277721.

It is not a de Polignac number, because 12777297 - 2⁸ = 12777041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12777299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4243 + ... + 6599.

It is an arithmetic number, because the mean of its divisors is an integer number (1155420).

Almost surely, 2^12777297 is an apocalyptic number.

It is an amenable number.

12777297 is a deficient number, since it is larger than the sum of its proper divisors (5709423).

12777297 is a wasteful number, since it uses less digits than its factorization.

12777297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512.

The product of its digits is 86436, while the sum is 42.

The square root of 12777297 is about 3574.5345151502. The cubic root of 12777297 is about 233.7830372628.

The spelling of 12777297 in words is "twelve million, seven hundred seventy-seven thousand, two hundred ninety-seven".