166764 has 24 divisors (see below), whose sum is σ = 419440. Its totient is φ = 51264.

The previous prime is 166741. The next prime is 166781. The reversal of 166764 is 467661.

166764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an unprimeable number.

166764 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379 + ... + 690.

2¹⁶⁶⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

166764 is an abundant number, since it is smaller than the sum of its proper divisors (252676).

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

166764 is a wasteful number, since it uses less digits than its factorization.

166764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 1087 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 166764 is about 408.3674815653. The cubic root of 166764 is about 55.0428316497.

The spelling of 166764 in words is "one hundred sixty-six thousand, seven hundred sixty-four".