12671895 has 16 divisors (see below), whose sum is σ = 20385792. Its totient is φ = 6721440.

The previous prime is 12671887. The next prime is 12671921. The reversal of 12671895 is 59817621.

It is not a de Polignac number, because 12671895 - 2³ = 12671887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654 + ... + 5076.

It is an arithmetic number, because the mean of its divisors is an integer number (1274112).

Almost surely, 2^12671895 is an apocalyptic number.

12671895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12671895 is a deficient number, since it is larger than the sum of its proper divisors (7713897).

12671895 is a wasteful number, since it uses less digits than its factorization.

12671895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4622.

The product of its digits is 30240, while the sum is 39.

The square root of 12671895 is about 3559.7605256534. The cubic root of 12671895 is about 233.1384233994.

The spelling of 12671895 in words is "twelve million, six hundred seventy-one thousand, eight hundred ninety-five".