166704804 has 84 divisors (see below), whose sum is σ = 499946944. Its totient is φ = 47624112.

The previous prime is 166704793. The next prime is 166704859. The reversal of 166704804 is 408407661.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 16329 + ... + 24495.

Almost surely, 2^166704804 is an apocalyptic number.

166704804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166704804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249973472).

166704804 is an abundant number, since it is smaller than the sum of its proper divisors (333242140).

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

166704804 is an equidigital number, since it uses as much as digits as its factorization.

166704804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8196 (or 8179 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 166704804 is about 12911.4214554401. The cubic root of 166704804 is about 550.3631805146.

The spelling of 166704804 in words is "one hundred sixty-six million, seven hundred four thousand, eight hundred four".