12785684 has 6 divisors (see below), whose sum is σ = 22374954. Its totient is φ = 6392840.

The previous prime is 12785681. The next prime is 12785693. The reversal of 12785684 is 48658721.

It can be written as a sum of positive squares in only one way, i.e., 12602500 + 183184 = 3550^2 + 428^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12785681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1598207 + ... + 1598214.

It is an arithmetic number, because the mean of its divisors is an integer number (3729159).

Almost surely, 2^12785684 is an apocalyptic number.

It is an amenable number.

12785684 is a deficient number, since it is larger than the sum of its proper divisors (9589270).

12785684 is a wasteful number, since it uses less digits than its factorization.

12785684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196425 (or 3196423 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 12785684 is about 3575.7074824432. The cubic root of 12785684 is about 233.8341776952.

The spelling of 12785684 in words is "twelve million, seven hundred eighty-five thousand, six hundred eighty-four".