13678 has 8 divisors (see below), whose sum is σ = 23472. Its totient is φ = 5856.

The previous prime is 13669. The next prime is 13679. The reversal of 13678 is 87631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 10 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13679) 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, 475 + ... + 502.

It is an arithmetic number, because the mean of its divisors is an integer number (2934).

2¹³⁶⁷⁸ is an apocalyptic number.

13678 is a deficient number, since it is larger than the sum of its proper divisors (9794).

13678 is an equidigital number, since it uses as much as digits as its factorization.

13678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986.

The product of its digits is 1008, while the sum is 25.

The square root of 13678 is about 116.9529820056. The cubic root of 13678 is about 23.9152100564.

The spelling of 13678 in words is "thirteen thousand, six hundred seventy-eight".