13686677 has 4 divisors (see below), whose sum is σ = 13762476. Its totient is φ = 13610880.

The previous prime is 13686641. The next prime is 13686689. The reversal of 13686677 is 77668631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1359556 + 12327121 = 1166^2 + 3511^2 .

It is a cyclic number.

It is not a de Polignac number, because 13686677 - 2⁶ = 13686613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13686077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37628 + ... + 37989.

It is an arithmetic number, because the mean of its divisors is an integer number (3440619).

Almost surely, 2^13686677 is an apocalyptic number.

It is an amenable number.

13686677 is a deficient number, since it is larger than the sum of its proper divisors (75799).

13686677 is an equidigital number, since it uses as much as digits as its factorization.

13686677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75798.

The product of its digits is 254016, while the sum is 44.

The square root of 13686677 is about 3699.5509186927. The cubic root of 13686677 is about 239.2026606882.

The spelling of 13686677 in words is "thirteen million, six hundred eighty-six thousand, six hundred seventy-seven".