13693697 has 4 divisors (see below), whose sum is σ = 13781076. Its totient is φ = 13606320.

The previous prime is 13693639. The next prime is 13693703. The reversal of 13693697 is 79639631.

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: 79639631 = 2269 ⋅35099.

It can be written as a sum of positive squares in 2 ways, for example, as 9991921 + 3701776 = 3161^2 + 1924^2 .

It is a cyclic number.

It is not a de Polignac number, because 13693697 - 2¹² = 13689601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13693607) 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, 43454 + ... + 43767.

It is an arithmetic number, because the mean of its divisors is an integer number (3445269).

Almost surely, 2^13693697 is an apocalyptic number.

It is an amenable number.

13693697 is a deficient number, since it is larger than the sum of its proper divisors (87379).

13693697 is an equidigital number, since it uses as much as digits as its factorization.

13693697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87378.

The product of its digits is 183708, while the sum is 44.

The square root of 13693697 is about 3700.4995608701. The cubic root of 13693697 is about 239.2435499819.

The spelling of 13693697 in words is "thirteen million, six hundred ninety-three thousand, six hundred ninety-seven".