13656271 has 4 divisors (see below), whose sum is σ = 13668912. Its totient is φ = 13643632.

The previous prime is 13656263. The next prime is 13656277. The reversal of 13656271 is 17265631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17265631 = 421 ⋅41011.

It is a cyclic number.

It is not a de Polignac number, because 13656271 - 2³ = 13656263 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13656277) 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 3 ways as a sum of consecutive naturals, for example, 4531 + ... + 6916.

It is an arithmetic number, because the mean of its divisors is an integer number (3417228).

Almost surely, 2^13656271 is an apocalyptic number.

13656271 is a deficient number, since it is larger than the sum of its proper divisors (12641).

13656271 is a wasteful number, since it uses less digits than its factorization.

13656271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12640.

The product of its digits is 7560, while the sum is 31.

The square root of 13656271 is about 3695.4392161149. The cubic root of 13656271 is about 239.0253936826.

The spelling of 13656271 in words is "thirteen million, six hundred fifty-six thousand, two hundred seventy-one".