12685830 has 16 divisors (see below), whose sum is σ = 30446064. Its totient is φ = 3382880.

The previous prime is 12685763. The next prime is 12685837. The reversal of 12685830 is 3858621.

It is a happy number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12685791 and 12685800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12685837) 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, 211401 + ... + 211460.

It is an arithmetic number, because the mean of its divisors is an integer number (1902879).

Almost surely, 2^12685830 is an apocalyptic number.

12685830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12685830 is an abundant number, since it is smaller than the sum of its proper divisors (17760234).

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

12685830 is a wasteful number, since it uses less digits than its factorization.

12685830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422871.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 12685830 is about 3561.7172824355. The cubic root of 12685830 is about 233.2238511323.

The spelling of 12685830 in words is "twelve million, six hundred eighty-five thousand, eight hundred thirty".