12684918 has 16 divisors (see below), whose sum is σ = 25718256. Its totient is φ = 4170240.

The previous prime is 12684911. The next prime is 12684923. The reversal of 12684918 is 81948621.

12684918 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12684911) 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, 14043 + ... + 14918.

It is an arithmetic number, because the mean of its divisors is an integer number (1607391).

Almost surely, 2^12684918 is an apocalyptic number.

12684918 is an abundant number, since it is smaller than the sum of its proper divisors (13033338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12684918 is a wasteful number, since it uses less digits than its factorization.

12684918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29039.

The product of its digits is 27648, while the sum is 39.

The square root of 12684918 is about 3561.5892520053. The cubic root of 12684918 is about 233.2182620814.

The spelling of 12684918 in words is "twelve million, six hundred eighty-four thousand, nine hundred eighteen".