13997697 has 8 divisors (see below), whose sum is σ = 21329856. Its totient is φ = 7998672.

The previous prime is 13997693. The next prime is 13997713. The reversal of 13997697 is 79679931.

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

It is not a de Polignac number, because 13997697 - 2² = 13997693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13997693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333258 + ... + 333299.

It is an arithmetic number, because the mean of its divisors is an integer number (2666232).

Almost surely, 2^13997697 is an apocalyptic number.

It is an amenable number.

13997697 is a deficient number, since it is larger than the sum of its proper divisors (7332159).

13997697 is an equidigital number, since it uses as much as digits as its factorization.

13997697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666567.

The product of its digits is 642978, while the sum is 51.

The square root of 13997697 is about 3741.3496227966. The cubic root of 13997697 is about 241.0010100794.

The spelling of 13997697 in words is "thirteen million, nine hundred ninety-seven thousand, six hundred ninety-seven".