13676409 has 12 divisors (see below), whose sum is σ = 20794800. Its totient is φ = 8637624.

The previous prime is 13676407. The next prime is 13676413. The reversal of 13676409 is 90467631.

13676409 is a `hidden beast` number, since 1 + 3 + 6 + 7 + 640 + 9 = 666.

It is not a de Polignac number, because 13676409 - 2¹ = 13676407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13676407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39819 + ... + 40160.

It is an arithmetic number, because the mean of its divisors is an integer number (1732900).

Almost surely, 2^13676409 is an apocalyptic number.

13676409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13676409 is a deficient number, since it is larger than the sum of its proper divisors (7118391).

13676409 is a wasteful number, since it uses less digits than its factorization.

13676409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80004 (or 80001 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 13676409 is about 3698.1629223170. The cubic root of 13676409 is about 239.1428276260.

It can be divided in two parts, 1367 and 6409, that added together give a 5-th power (7776 = 6⁵).

The spelling of 13676409 in words is "thirteen million, six hundred seventy-six thousand, four hundred nine".