166650000 has 240 divisors, whose sum is σ = 592837056. Its totient is φ = 40000000.

The previous prime is 166649999. The next prime is 166650013. The reversal of 166650000 is 56661.

166650000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1649950 + ... + 1650050.

Almost surely, 2^166650000 is an apocalyptic number.

166650000 is a gapful number since it is divisible by the number (10) 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 166650000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296418528).

166650000 is an abundant number, since it is smaller than the sum of its proper divisors (426187056).

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

166650000 is a wasteful number, since it uses less digits than its factorization.

166650000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 166650000 is about 12909.2989739955. The cubic root of 166650000 is about 550.3028634973.

The spelling of 166650000 in words is "one hundred sixty-six million, six hundred fifty thousand".