13681205 has 8 divisors (see below), whose sum is σ = 17131392. Its totient is φ = 10469008.

The previous prime is 13681163. The next prime is 13681211. The reversal of 13681205 is 50218631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13681205 - 2⁸ = 13680949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59369 + ... + 59598.

It is an arithmetic number, because the mean of its divisors is an integer number (2141424).

Almost surely, 2^13681205 is an apocalyptic number.

It is an amenable number.

13681205 is a deficient number, since it is larger than the sum of its proper divisors (3450187).

13681205 is a wasteful number, since it uses less digits than its factorization.

13681205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118995.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 13681205 is about 3698.8112955381. The cubic root of 13681205 is about 239.1707783101.

Adding to 13681205 its reverse (50218631), we get a palindrome (63899836).

The spelling of 13681205 in words is "thirteen million, six hundred eighty-one thousand, two hundred five".