12378685 has 8 divisors (see below), whose sum is σ = 16204896. Its totient is φ = 9002640.

The previous prime is 12378673. The next prime is 12378689. The reversal of 12378685 is 58687321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12378685 - 2⁹ = 12378173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12378689) 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, 112479 + ... + 112588.

It is an arithmetic number, because the mean of its divisors is an integer number (2025612).

Almost surely, 2^12378685 is an apocalyptic number.

It is an amenable number.

12378685 is a deficient number, since it is larger than the sum of its proper divisors (3826211).

12378685 is a wasteful number, since it uses less digits than its factorization.

12378685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225083.

The product of its digits is 80640, while the sum is 40.

The square root of 12378685 is about 3518.3355439753. The cubic root of 12378685 is about 231.3262071699.

The spelling of 12378685 in words is "twelve million, three hundred seventy-eight thousand, six hundred eighty-five".