12866677 has 4 divisors (see below), whose sum is σ = 12908896. Its totient is φ = 12824460.

The previous prime is 12866647. The next prime is 12866681. The reversal of 12866677 is 77666821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77666821 = 113 ⋅687317.

It is a cyclic number.

It is not a de Polignac number, because 12866677 - 2¹⁹ = 12342389 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 (12866617) 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, 20649 + ... + 21262.

It is an arithmetic number, because the mean of its divisors is an integer number (3227224).

Almost surely, 2^12866677 is an apocalyptic number.

It is an amenable number.

12866677 is a deficient number, since it is larger than the sum of its proper divisors (42219).

12866677 is an equidigital number, since it uses as much as digits as its factorization.

12866677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42218.

The product of its digits is 169344, while the sum is 43.

The square root of 12866677 is about 3587.0150543314. The cubic root of 12866677 is about 234.3268923365.

The spelling of 12866677 in words is "twelve million, eight hundred sixty-six thousand, six hundred seventy-seven".