13684081 has 4 divisors (see below), whose sum is σ = 13825252. Its totient is φ = 13542912.

The previous prime is 13684079. The next prime is 13684087. The reversal of 13684081 is 18048631.

13684081 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 can be written as a sum of positive squares in 2 ways, for example, as 4928400 + 8755681 = 2220^2 + 2959^2 .

It is a cyclic number.

It is not a de Polignac number, because 13684081 - 2¹ = 13684079 is a prime.

It is a super-2 number, since 2×13684081² = 374508145629122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13684087) 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, 70440 + ... + 70633.

It is an arithmetic number, because the mean of its divisors is an integer number (3456313).

Almost surely, 2^13684081 is an apocalyptic number.

It is an amenable number.

13684081 is a deficient number, since it is larger than the sum of its proper divisors (141171).

13684081 is an equidigital number, since it uses as much as digits as its factorization.

13684081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141170.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 13684081 is about 3699.2000486592. The cubic root of 13684081 is about 239.1875362629.

The spelling of 13684081 in words is "thirteen million, six hundred eighty-four thousand, eighty-one".