13678871 has 4 divisors (see below), whose sum is σ = 14012544. Its totient is φ = 13345200.

The previous prime is 13678853. The next prime is 13678891. The reversal of 13678871 is 17887631.

13678871 is digitally balanced in base 2, because in such base 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 an emirpimes, since its reverse is a distinct semiprime: 17887631 = 2963 ⋅6037.

It is a cyclic number.

It is not a de Polignac number, because 13678871 - 2¹⁸ = 13416727 is a prime.

It is a super-2 number, since 2×13678871² = 374223023669282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 333631 = 13678871 / (1 + 3 + 6 + 7 + 8 + 8 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13678811) 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, 166775 + ... + 166856.

It is an arithmetic number, because the mean of its divisors is an integer number (3503136).

Almost surely, 2^13678871 is an apocalyptic number.

13678871 is a deficient number, since it is larger than the sum of its proper divisors (333673).

13678871 is an equidigital number, since it uses as much as digits as its factorization.

13678871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333672.

The product of its digits is 56448, while the sum is 41.

The square root of 13678871 is about 3698.4957753119. The cubic root of 13678871 is about 239.1571767707.

The spelling of 13678871 in words is "thirteen million, six hundred seventy-eight thousand, eight hundred seventy-one".