12678556 has 24 divisors (see below), whose sum is σ = 24346224. Its totient is φ = 5729280.

The previous prime is 12678527. The next prime is 12678557. The reversal of 12678556 is 65587621.

12678556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12678557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7746 + ... + 9238.

It is an arithmetic number, because the mean of its divisors is an integer number (1014426).

Almost surely, 2^12678556 is an apocalyptic number.

It is an amenable number.

12678556 is a deficient number, since it is larger than the sum of its proper divisors (11667668).

12678556 is a wasteful number, since it uses less digits than its factorization.

12678556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701 (or 1699 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 12678556 is about 3560.6959993799. The cubic root of 12678556 is about 233.1792660941.

The spelling of 12678556 in words is "twelve million, six hundred seventy-eight thousand, five hundred fifty-six".