12666834 has 16 divisors (see below), whose sum is σ = 28148640. Its totient is φ = 4222260.

The previous prime is 12666821. The next prime is 12666847. The reversal of 12666834 is 43866621.

It is an interprime number because it is at equal distance from previous prime (12666821) and next prime (12666847).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117232 + ... + 117339.

It is an arithmetic number, because the mean of its divisors is an integer number (1759290).

Almost surely, 2^12666834 is an apocalyptic number.

12666834 is an abundant number, since it is smaller than the sum of its proper divisors (15481806).

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

12666834 is a wasteful number, since it uses less digits than its factorization.

12666834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234582 (or 234576 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 12666834 is about 3559.0495922367. The cubic root of 12666834 is about 233.1073817207.

It can be divided in two parts, 1266 and 6834, that added together give a square (8100 = 90²).

The spelling of 12666834 in words is "twelve million, six hundred sixty-six thousand, eight hundred thirty-four".