13676639 has 4 divisors (see below), whose sum is σ = 13707024. Its totient is φ = 13646256.

The previous prime is 13676629. The next prime is 13676647. The reversal of 13676639 is 93667631.

13676639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13676639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13676596 and 13676605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13676609) 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, 14507 + ... + 15420.

It is an arithmetic number, because the mean of its divisors is an integer number (3426756).

Almost surely, 2^13676639 is an apocalyptic number.

13676639 is a deficient number, since it is larger than the sum of its proper divisors (30385).

13676639 is an equidigital number, since it uses as much as digits as its factorization.

13676639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30384.

The product of its digits is 122472, while the sum is 41.

The square root of 13676639 is about 3698.1940187070. The cubic root of 13676639 is about 239.1441681958.

The spelling of 13676639 in words is "thirteen million, six hundred seventy-six thousand, six hundred thirty-nine".