5678 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.
It is a sphenic number, since it is the product of 3 distinct primes.
It is an alternating number because its digits alternate between odd and even.
It is a straight-line number, since its digits are in arithmetic progression.
It is a plaindrome in base 10 and base 13.
It is a congruent number.
It is an unprimeable number.
25678 is an apocalyptic number.
5678 is a wasteful number, since it uses less digits than its factorization.
5678 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 186.
The square root of 5678 is about 75.3525049351. The cubic root of 5678 is about 17.8401484031.
The spelling of 5678 in words is "five thousand, six hundred seventy-eight".