13786 has 8 divisors (see below), whose sum is σ = 21204. Its totient is φ = 6720.

The previous prime is 13781. The next prime is 13789. The reversal of 13786 is 68731.

It can be written as a sum of positive squares in 2 ways, for example, as 9025 + 4761 = 95^2 + 69^2 .

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

13786 is an undulating number in base 11 and base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 13786.

It is not an unprimeable number, because it can be changed into a prime (13781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66 + ... + 178.

2¹³⁷⁸⁶ is an apocalyptic number.

13786 is a deficient number, since it is larger than the sum of its proper divisors (7418).

13786 is a wasteful number, since it uses less digits than its factorization.

13786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176.

The product of its digits is 1008, while the sum is 25.

The square root of 13786 is about 117.4137981670. The cubic root of 13786 is about 23.9779890787.

Subtracting 13786 from its reverse (68731), we obtain a palindrome (54945).

The spelling of 13786 in words is "thirteen thousand, seven hundred eighty-six".