12756677 has 4 divisors (see below), whose sum is σ = 12931500. Its totient is φ = 12581856.

The previous prime is 12756673. The next prime is 12756691. The reversal of 12756677 is 77665721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77665721 = 7 ⋅11095103.

It can be written as a sum of positive squares in 2 ways, for example, as 11082241 + 1674436 = 3329^2 + 1294^2 .

It is a cyclic number.

It is not a de Polignac number, because 12756677 - 2² = 12756673 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 (12756673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87302 + ... + 87447.

It is an arithmetic number, because the mean of its divisors is an integer number (3232875).

Almost surely, 2^12756677 is an apocalyptic number.

It is an amenable number.

12756677 is a deficient number, since it is larger than the sum of its proper divisors (174823).

12756677 is an equidigital number, since it uses as much as digits as its factorization.

12756677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174822.

The product of its digits is 123480, while the sum is 41.

The square root of 12756677 is about 3571.6490589082. The cubic root of 12756677 is about 233.6572098748.

The spelling of 12756677 in words is "twelve million, seven hundred fifty-six thousand, six hundred seventy-seven".