12985684 has 12 divisors (see below), whose sum is σ = 23279508. Its totient is φ = 6334400.

The previous prime is 12985673. The next prime is 12985697. The reversal of 12985684 is 48658921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2924100 + 10061584 = 1710^2 + 3172^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12985684.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39427 + ... + 39754.

It is an arithmetic number, because the mean of its divisors is an integer number (1939959).

Almost surely, 2^12985684 is an apocalyptic number.

It is an amenable number.

12985684 is a deficient number, since it is larger than the sum of its proper divisors (10293824).

12985684 is a wasteful number, since it uses less digits than its factorization.

12985684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79226 (or 79224 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 12985684 is about 3603.5654565999. The cubic root of 12985684 is about 235.0471249993.

The spelling of 12985684 in words is "twelve million, nine hundred eighty-five thousand, six hundred eighty-four".