13711647 has 4 divisors (see below), whose sum is σ = 18282200. Its totient is φ = 9141096.

The previous prime is 13711619. The next prime is 13711661. The reversal of 13711647 is 74611731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74611731 = 3 ⋅24870577.

It is not a de Polignac number, because 13711647 - 2⁶ = 13711583 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 (13711667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2285272 + ... + 2285277.

It is an arithmetic number, because the mean of its divisors is an integer number (4570550).

Almost surely, 2^13711647 is an apocalyptic number.

13711647 is a deficient number, since it is larger than the sum of its proper divisors (4570553).

13711647 is an equidigital number, since it uses as much as digits as its factorization.

13711647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570552.

The product of its digits is 3528, while the sum is 30.

The square root of 13711647 is about 3702.9241148044. The cubic root of 13711647 is about 239.3480395798.

The spelling of 13711647 in words is "thirteen million, seven hundred eleven thousand, six hundred forty-seven".