It is a happy number.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 76633 = 197 ⋅389.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-33667 is a prime.
It is a Duffinian number.
33667 is an undulating number in base 16.
It is a plaindrome in base 10.
233667 is an apocalyptic number.
33667 is a wasteful number, since it uses less digits than its factorization.
33667 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 388.
The square root of 33667 is about 183.4856942652. The cubic root of 33667 is about 32.2900070369.
The spelling of 33667 in words is "thirty-three thousand, six hundred sixty-seven".