13671597 has 4 divisors (see below), whose sum is σ = 18228800. Its totient is φ = 9114396.

The previous prime is 13671577. The next prime is 13671599. The reversal of 13671597 is 79517631.

13671597 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79517631 = 3 ⋅26505877.

It is not a de Polignac number, because 13671597 - 2⁶ = 13671533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13671599) 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, 2278597 + ... + 2278602.

It is an arithmetic number, because the mean of its divisors is an integer number (4557200).

Almost surely, 2^13671597 is an apocalyptic number.

It is an amenable number.

13671597 is a deficient number, since it is larger than the sum of its proper divisors (4557203).

13671597 is an equidigital number, since it uses as much as digits as its factorization.

13671597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4557202.

The product of its digits is 39690, while the sum is 39.

The square root of 13671597 is about 3697.5122717849. The cubic root of 13671597 is about 239.1147771274.

The spelling of 13671597 in words is "thirteen million, six hundred seventy-one thousand, five hundred ninety-seven".