166704400 has 30 divisors (see below), whose sum is σ = 400508282. Its totient is φ = 66681600.

The previous prime is 166704389. The next prime is 166704409. The reversal of 166704400 is 4407661.

It can be written as a sum of positive squares in 3 ways, for example, as 49112064 + 117592336 = 7008^2 + 10844^2 .

It is not an unprimeable number, because it can be changed into a prime (166704409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207981 + ... + 208780.

Almost surely, 2^166704400 is an apocalyptic number.

166704400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166704400 is an abundant number, since it is smaller than the sum of its proper divisors (233803882).

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

166704400 is a wasteful number, since it uses less digits than its factorization.

166704400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416779 (or 416768 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 166704400 is about 12911.4058103678. The cubic root of 166704400 is about 550.3627359225.

The spelling of 166704400 in words is "one hundred sixty-six million, seven hundred four thousand, four hundred".