12687267 has 4 divisors (see below), whose sum is σ = 16916360. Its totient is φ = 8458176.

The previous prime is 12687223. The next prime is 12687331. The reversal of 12687267 is 76278621.

12687267 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12687267 - 2⁸ = 12687011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12687067) 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, 2114542 + ... + 2114547.

It is an arithmetic number, because the mean of its divisors is an integer number (4229090).

Almost surely, 2^12687267 is an apocalyptic number.

12687267 is a deficient number, since it is larger than the sum of its proper divisors (4229093).

12687267 is an equidigital number, since it uses as much as digits as its factorization.

12687267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4229092.

The product of its digits is 56448, while the sum is 39.

The square root of 12687267 is about 3561.9190052555. The cubic root of 12687267 is about 233.2326570210.

The spelling of 12687267 in words is "twelve million, six hundred eighty-seven thousand, two hundred sixty-seven".