12659946 has 32 divisors (see below), whose sum is σ = 27554688. Its totient is φ = 3854400.

The previous prime is 12659897. The next prime is 12659953. The reversal of 12659946 is 64995621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12659898 and 12659907.

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 15 ways as a sum of consecutive naturals, for example, 7075 + ... + 8681.

It is an arithmetic number, because the mean of its divisors is an integer number (861084).

Almost surely, 2^12659946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12659946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13777344).

12659946 is an abundant number, since it is smaller than the sum of its proper divisors (14894742).

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

12659946 is a wasteful number, since it uses less digits than its factorization.

12659946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726.

The product of its digits is 116640, while the sum is 42.

The square root of 12659946 is about 3558.0817865811. The cubic root of 12659946 is about 233.0651208376.

It can be divided in two parts, 1265 and 9946, that added together give a palindrome (11211).

The spelling of 12659946 in words is "twelve million, six hundred fifty-nine thousand, nine hundred forty-six".