166650012 has 18 divisors (see below), whose sum is σ = 421254288. Its totient is φ = 55549992.

The previous prime is 166649999. The next prime is 166650013. The reversal of 166650012 is 210056661.

It is a happy number.

166650012 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 (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166650013) 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, 2314548 + ... + 2314619.

It is an arithmetic number, because the mean of its divisors is an integer number (23403016).

Almost surely, 2^166650012 is an apocalyptic number.

166650012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166650012 is an abundant number, since it is smaller than the sum of its proper divisors (254604276).

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

166650012 is a wasteful number, since it uses less digits than its factorization.

166650012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629177 (or 4629172 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 166650012 is about 12909.2994387767. The cubic root of 166650012 is about 550.3028767059.

The spelling of 166650012 in words is "one hundred sixty-six million, six hundred fifty thousand, twelve".