13676405 has 4 divisors (see below), whose sum is σ = 16411692. Its totient is φ = 10941120.

The previous prime is 13676393. The next prime is 13676407. The reversal of 13676405 is 50467631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50467631 = 103 ⋅489977.

It can be written as a sum of positive squares in 2 ways, for example, as 2540836 + 11135569 = 1594^2 + 3337^2 .

It is not a de Polignac number, because 13676405 - 2¹⁴ = 13660021 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 (13676407) 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, 1367636 + ... + 1367645.

It is an arithmetic number, because the mean of its divisors is an integer number (4102923).

Almost surely, 2^13676405 is an apocalyptic number.

It is an amenable number.

13676405 is a deficient number, since it is larger than the sum of its proper divisors (2735287).

13676405 is an equidigital number, since it uses as much as digits as its factorization.

13676405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735286.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 13676405 is about 3698.1623815079. The cubic root of 13676405 is about 239.1428043116.

The spelling of 13676405 in words is "thirteen million, six hundred seventy-six thousand, four hundred five".