12866867 has 12 divisors (see below), whose sum is σ = 14493024. Its totient is φ = 11354640.

The previous prime is 12866851. The next prime is 12866869. The reversal of 12866867 is 76866821.

It is not a de Polignac number, because 12866867 - 2⁴ = 12866851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12866869) 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 11 ways as a sum of consecutive naturals, for example, 5942 + ... + 7812.

It is an arithmetic number, because the mean of its divisors is an integer number (1207752).

Almost surely, 2^12866867 is an apocalyptic number.

12866867 is a deficient number, since it is larger than the sum of its proper divisors (1626157).

12866867 is a wasteful number, since it uses less digits than its factorization.

12866867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930 (or 1907 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 12866867 is about 3587.0415386499. The cubic root of 12866867 is about 234.3280457524.

The spelling of 12866867 in words is "twelve million, eight hundred sixty-six thousand, eight hundred sixty-seven".