13697806 has 4 divisors (see below), whose sum is σ = 20546712. Its totient is φ = 6848902.

The previous prime is 13697791. The next prime is 13697833. The reversal of 13697806 is 60879631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60879631 = 1447 ⋅42073.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3424450 + ... + 3424453.

It is an arithmetic number, because the mean of its divisors is an integer number (5136678).

Almost surely, 2^13697806 is an apocalyptic number.

13697806 is a deficient number, since it is larger than the sum of its proper divisors (6848906).

13697806 is an equidigital number, since it uses as much as digits as its factorization.

13697806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6848905.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 13697806 is about 3701.0547145375. The cubic root of 13697806 is about 239.2674771322.

The spelling of 13697806 in words is "thirteen million, six hundred ninety-seven thousand, eight hundred six".