13666446 has 24 divisors (see below), whose sum is σ = 29877120. Its totient is φ = 4514496.

The previous prime is 13666441. The next prime is 13666451. The reversal of 13666446 is 64466631.

It is an interprime number because it is at equal distance from previous prime (13666441) and next prime (13666451).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13666446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13666441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1326 + ... + 5393.

It is an arithmetic number, because the mean of its divisors is an integer number (1244880).

Almost surely, 2^13666446 is an apocalyptic number.

13666446 is an abundant number, since it is smaller than the sum of its proper divisors (16210674).

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

13666446 is a wasteful number, since it uses less digits than its factorization.

13666446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840 (or 6837 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 13666446 is about 3696.8156567511. The cubic root of 13666446 is about 239.0847432078.

The spelling of 13666446 in words is "thirteen million, six hundred sixty-six thousand, four hundred forty-six".