166804 has 24 divisors (see below), whose sum is σ = 338688. Its totient is φ = 71040.

The previous prime is 166799. The next prime is 166807. The reversal of 166804 is 408661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637 + ... + 859.

It is an arithmetic number, because the mean of its divisors is an integer number (14112).

2¹⁶⁶⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

166804 is an abundant number, since it is smaller than the sum of its proper divisors (171884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166804 is a wasteful number, since it uses less digits than its factorization.

166804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 166804 is about 408.4164541250. The cubic root of 166804 is about 55.0472321543.

The spelling of 166804 in words is "one hundred sixty-six thousand, eight hundred four".