13684445 has 4 divisors (see below), whose sum is σ = 16421340. Its totient is φ = 10947552.

The previous prime is 13684421. The next prime is 13684453. The reversal of 13684445 is 54448631.

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 5635876 + 8048569 = 2374^2 + 2837^2 .

It is a cyclic number.

It is not a de Polignac number, because 13684445 - 2⁸ = 13684189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1368440 + ... + 1368449.

It is an arithmetic number, because the mean of its divisors is an integer number (4105335).

Almost surely, 2^13684445 is an apocalyptic number.

It is an amenable number.

13684445 is a deficient number, since it is larger than the sum of its proper divisors (2736895).

13684445 is an equidigital number, since it uses as much as digits as its factorization.

13684445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736894.

The product of its digits is 46080, while the sum is 35.

The square root of 13684445 is about 3699.2492481583. The cubic root of 13684445 is about 239.1896570603.

The spelling of 13684445 in words is "thirteen million, six hundred eighty-four thousand, four hundred forty-five".