13017897 has 12 divisors (see below), whose sum is σ = 19452420. Its totient is φ = 8379168.

The previous prime is 13017889. The next prime is 13017929. The reversal of 13017897 is 79871031.

It can be written as a sum of positive squares in 2 ways, for example, as 2752281 + 10265616 = 1659^2 + 3204^2 .

It is not a de Polignac number, because 13017897 - 2³ = 13017889 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13017847) 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 11 ways as a sum of consecutive naturals, for example, 24678 + ... + 25199.

It is an arithmetic number, because the mean of its divisors is an integer number (1621035).

Almost surely, 2^13017897 is an apocalyptic number.

It is an amenable number.

13017897 is a deficient number, since it is larger than the sum of its proper divisors (6434523).

13017897 is a wasteful number, since it uses less digits than its factorization.

13017897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49912 (or 49909 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 13017897 is about 3608.0322892125. The cubic root of 13017897 is about 235.2413214398.

The spelling of 13017897 in words is "thirteen million, seventeen thousand, eight hundred ninety-seven".