12655879 has 4 divisors (see below), whose sum is σ = 12816160. Its totient is φ = 12495600.

The previous prime is 12655873. The next prime is 12655897. The reversal of 12655879 is 97855621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97855621 = 17 ⋅5756213.

It is a cyclic number.

It is not a de Polignac number, because 12655879 - 2⁷ = 12655751 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 (12655873) 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, 80022 + ... + 80179.

It is an arithmetic number, because the mean of its divisors is an integer number (3204040).

Almost surely, 2^12655879 is an apocalyptic number.

12655879 is a deficient number, since it is larger than the sum of its proper divisors (160281).

12655879 is an equidigital number, since it uses as much as digits as its factorization.

12655879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160280.

The product of its digits is 151200, while the sum is 43.

The square root of 12655879 is about 3557.5102248623. The cubic root of 12655879 is about 233.0401608216.

The spelling of 12655879 in words is "twelve million, six hundred fifty-five thousand, eight hundred seventy-nine".