13696809 has 8 divisors (see below), whose sum is σ = 20871360. Its totient is φ = 7826736.

The previous prime is 13696789. The next prime is 13696817. The reversal of 13696809 is 90869631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13696809 - 2⁹ = 13696297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13696409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326094 + ... + 326135.

It is an arithmetic number, because the mean of its divisors is an integer number (2608920).

Almost surely, 2^13696809 is an apocalyptic number.

It is an amenable number.

13696809 is a deficient number, since it is larger than the sum of its proper divisors (7174551).

13696809 is an equidigital number, since it uses as much as digits as its factorization.

13696809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652239.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 13696809 is about 3700.9200207516. The cubic root of 13696809 is about 239.2616719334.

The spelling of 13696809 in words is "thirteen million, six hundred ninety-six thousand, eight hundred nine".