12398685 has 48 divisors (see below), whose sum is σ = 22100544. Its totient is φ = 5930496.

The previous prime is 12398671. The next prime is 12398693. The reversal of 12398685 is 58689321.

It is not a de Polignac number, because 12398685 - 2⁴ = 12398669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 169809 + ... + 169881.

It is an arithmetic number, because the mean of its divisors is an integer number (460428).

Almost surely, 2^12398685 is an apocalyptic number.

12398685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12398685 is a deficient number, since it is larger than the sum of its proper divisors (9701859).

12398685 is a wasteful number, since it uses less digits than its factorization.

12398685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 161 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 12398685 is about 3521.1766499283. The cubic root of 12398685 is about 231.4507232155.

The spelling of 12398685 in words is "twelve million, three hundred ninety-eight thousand, six hundred eighty-five".