13613427 has 10 divisors (see below), whose sum is σ = 20336228. Its totient is φ = 9075564.

The previous prime is 13613393. The next prime is 13613429. The reversal of 13613427 is 72431631.

13613427 is a `hidden beast` number, since 1 + 3 + 613 + 42 + 7 = 666.

13613427 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13613427 - 2¹¹ = 13611379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13613427.

It is not an unprimeable number, because it can be changed into a prime (13613429) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 83953 + ... + 84114.

Almost surely, 2^13613427 is an apocalyptic number.

13613427 is a deficient number, since it is larger than the sum of its proper divisors (6722801).

13613427 is an equidigital number, since it uses as much as digits as its factorization.

13613427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168079 (or 168070 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 13613427 is about 3689.6377871005. The cubic root of 13613427 is about 238.7751659738.

It can be divided in two parts, 136134 and 27, that added together give a square (136161 = 369²).

The spelling of 13613427 in words is "thirteen million, six hundred thirteen thousand, four hundred twenty-seven".