13684807 has 4 divisors (see below), whose sum is σ = 14405080. Its totient is φ = 12964536.

The previous prime is 13684787. The next prime is 13684823. The reversal of 13684807 is 70848631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70848631 = 7 ⋅10121233.

It is a de Polignac number, because none of the positive numbers 2^k-13684807 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 (13684877) 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, 360108 + ... + 360145.

It is an arithmetic number, because the mean of its divisors is an integer number (3601270).

Almost surely, 2^13684807 is an apocalyptic number.

13684807 is a deficient number, since it is larger than the sum of its proper divisors (720273).

13684807 is an equidigital number, since it uses as much as digits as its factorization.

13684807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720272.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 13684807 is about 3699.2981766816. The cubic root of 13684807 is about 239.1917661677.

The spelling of 13684807 in words is "thirteen million, six hundred eighty-four thousand, eight hundred seven".