12977659 has 4 divisors (see below), whose sum is σ = 13034560. Its totient is φ = 12920760.

The previous prime is 12977651. The next prime is 12977707. The reversal of 12977659 is 95677921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95677921 = 17 ⋅5628113.

It is a cyclic number.

It is not a de Polignac number, because 12977659 - 2³ = 12977651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12977651) 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 3 ways as a sum of consecutive naturals, for example, 28107 + ... + 28564.

It is an arithmetic number, because the mean of its divisors is an integer number (3258640).

Almost surely, 2^12977659 is an apocalyptic number.

12977659 is a deficient number, since it is larger than the sum of its proper divisors (56901).

12977659 is an equidigital number, since it uses as much as digits as its factorization.

12977659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56900.

The product of its digits is 238140, while the sum is 46.

The square root of 12977659 is about 3602.4518039802. The cubic root of 12977659 is about 234.9986962354.

The spelling of 12977659 in words is "twelve million, nine hundred seventy-seven thousand, six hundred fifty-nine".