13681206 has 48 divisors (see below), whose sum is σ = 36960768. Its totient is φ = 3553200.

The previous prime is 13681163. The next prime is 13681211. The reversal of 13681206 is 60218631.

It is a super-2 number, since 2×13681206² = 374350795228872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13681206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3550 + ... + 6321.

It is an arithmetic number, because the mean of its divisors is an integer number (770016).

Almost surely, 2^13681206 is an apocalyptic number.

13681206 is an abundant number, since it is smaller than the sum of its proper divisors (23279562).

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

13681206 is a wasteful number, since it uses less digits than its factorization.

13681206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9897 (or 9894 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 13681206 is about 3698.8114307166. The cubic root of 13681206 is about 239.1707841373.

Adding to 13681206 its reverse (60218631), we get a palindrome (73899837).

The spelling of 13681206 in words is "thirteen million, six hundred eighty-one thousand, two hundred six".