12658871 has 4 divisors (see below), whose sum is σ = 12706200. Its totient is φ = 12611544.

The previous prime is 12658861. The next prime is 12658879. The reversal of 12658871 is 17885621.

12658871 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17885621 = 13 ⋅1375817.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12658871 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 (12658879) 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, 23261 + ... + 23798.

It is an arithmetic number, because the mean of its divisors is an integer number (3176550).

Almost surely, 2^12658871 is an apocalyptic number.

12658871 is a deficient number, since it is larger than the sum of its proper divisors (47329).

12658871 is an equidigital number, since it uses as much as digits as its factorization.

12658871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47328.

The product of its digits is 26880, while the sum is 38.

The square root of 12658871 is about 3557.9307188308. The cubic root of 12658871 is about 233.0585238612.

The spelling of 12658871 in words is "twelve million, six hundred fifty-eight thousand, eight hundred seventy-one".