13697397 has 48 divisors (see below), whose sum is σ = 24420480. Its totient is φ = 7432128.

The previous prime is 13697389. The next prime is 13697399. The reversal of 13697397 is 79379631.

It is not a de Polignac number, because 13697397 - 2³ = 13697389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13697399) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99913 + ... + 100049.

It is an arithmetic number, because the mean of its divisors is an integer number (508760).

Almost surely, 2^13697397 is an apocalyptic number.

It is an amenable number.

13697397 is a deficient number, since it is larger than the sum of its proper divisors (10723083).

13697397 is a wasteful number, since it uses less digits than its factorization.

13697397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 170 counting only the distinct ones).

The product of its digits is 214326, while the sum is 45.

The square root of 13697397 is about 3700.9994596055. Note that the first 3 decimals coincide. The cubic root of 13697397 is about 239.2650956955.

The spelling of 13697397 in words is "thirteen million, six hundred ninety-seven thousand, three hundred ninety-seven".