166804134 has 96 divisors (see below), whose sum is σ = 403045632. Its totient is φ = 45864000.

The previous prime is 166804133. The next prime is 166804139. The reversal of 166804134 is 431408661.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166804095 and 166804104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166804133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1273249 + ... + 1273379.

It is an arithmetic number, because the mean of its divisors is an integer number (4198392).

Almost surely, 2^166804134 is an apocalyptic number.

166804134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166804134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201522816).

166804134 is an abundant number, since it is smaller than the sum of its proper divisors (236241498).

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

166804134 is a wasteful number, since it uses less digits than its factorization.

166804134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 166804134 is about 12915.2674769050. The cubic root of 166804134 is about 550.4724689478.

The spelling of 166804134 in words is "one hundred sixty-six million, eight hundred four thousand, one hundred thirty-four".