13613405 has 32 divisors (see below), whose sum is σ = 18896640. Its totient is φ = 9331200.

The previous prime is 13613393. The next prime is 13613429. The reversal of 13613405 is 50431631.

It is a happy number.

It is not a de Polignac number, because 13613405 - 2¹⁴ = 13597021 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90080 + ... + 90230.

It is an arithmetic number, because the mean of its divisors is an integer number (590520).

Almost surely, 2^13613405 is an apocalyptic number.

It is an amenable number.

13613405 is a deficient number, since it is larger than the sum of its proper divisors (5283235).

13613405 is a wasteful number, since it uses less digits than its factorization.

13613405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 13613405 is about 3689.6348057769. The cubic root of 13613405 is about 238.7750373494.

The spelling of 13613405 in words is "thirteen million, six hundred thirteen thousand, four hundred five".