12668985 has 48 divisors (see below), whose sum is σ = 25798656. Its totient is φ = 5629824.

The previous prime is 12668983. The next prime is 12668989. The reversal of 12668985 is 58986621.

It is not a de Polignac number, because 12668985 - 2¹ = 12668983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12668985.

It is not an unprimeable number, because it can be changed into a prime (12668983) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11112 + ... + 12198.

It is an arithmetic number, because the mean of its divisors is an integer number (537472).

Almost surely, 2^12668985 is an apocalyptic number.

12668985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12668985 is an abundant number, since it is smaller than the sum of its proper divisors (13129671).

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

12668985 is a wasteful number, since it uses less digits than its factorization.

12668985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142 (or 1139 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 12668985 is about 3559.3517668250. The cubic root of 12668985 is about 233.1205759043.

The spelling of 12668985 in words is "twelve million, six hundred sixty-eight thousand, nine hundred eighty-five".