12689277 has 4 divisors (see below), whose sum is σ = 16919040. Its totient is φ = 8459516.

The previous prime is 12689273. The next prime is 12689279. The reversal of 12689277 is 77298621.

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.

It is a cyclic number.

It is not a de Polignac number, because 12689277 - 2² = 12689273 is a prime.

It is a super-2 number, since 2×12689277² = 322035501565458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12689273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2114877 + ... + 2114882.

It is an arithmetic number, because the mean of its divisors is an integer number (4229760).

Almost surely, 2^12689277 is an apocalyptic number.

It is an amenable number.

12689277 is a deficient number, since it is larger than the sum of its proper divisors (4229763).

12689277 is an equidigital number, since it uses as much as digits as its factorization.

12689277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229762.

The product of its digits is 84672, while the sum is 42.

The square root of 12689277 is about 3562.2011453594. The cubic root of 12689277 is about 233.2449731194.

The spelling of 12689277 in words is "twelve million, six hundred eighty-nine thousand, two hundred seventy-seven".