133684 has 12 divisors (see below), whose sum is σ = 246400. Its totient is φ = 63288.

The previous prime is 133673. The next prime is 133691. The reversal of 133684 is 486331.

133684 = T₁₀₉ + T₁₁₀ + ... + T₁₂₇.

It is a plaindrome in base 9.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804 + ... + 955.

2¹³³⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

133684 is a deficient number, since it is larger than the sum of its proper divisors (112716).

133684 is a wasteful number, since it uses less digits than its factorization.

133684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782 (or 1780 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 133684 is about 365.6282264815. The cubic root of 133684 is about 51.1320428164.

The spelling of 133684 in words is "one hundred thirty-three thousand, six hundred eighty-four".