12685047 has 4 divisors (see below), whose sum is σ = 16913400. Its totient is φ = 8456696.

The previous prime is 12685037. The next prime is 12685051. The reversal of 12685047 is 74058621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12685047 - 2¹⁵ = 12652279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12684999 and 12685017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12685007) 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, 2114172 + ... + 2114177.

It is an arithmetic number, because the mean of its divisors is an integer number (4228350).

Almost surely, 2^12685047 is an apocalyptic number.

12685047 is a deficient number, since it is larger than the sum of its proper divisors (4228353).

12685047 is an equidigital number, since it uses as much as digits as its factorization.

12685047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228352.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 12685047 is about 3561.6073618522. The cubic root of 12685047 is about 233.2190526542.

The spelling of 12685047 in words is "twelve million, six hundred eighty-five thousand, forty-seven".