166385716 has 12 divisors (see below), whose sum is σ = 332771488. Its totient is φ = 71308152.

The previous prime is 166385671. The next prime is 166385741. The reversal of 166385716 is 617583661.

166385716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

166385716 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2971146 + ... + 2971201.

Almost surely, 2^166385716 is an apocalyptic number.

It is an amenable number.

166385716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166385716 is a wasteful number, since it uses less digits than its factorization.

166385716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5942358 (or 5942356 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 166385716 is about 12899.0587253489. The cubic root of 166385716 is about 550.0118080110.

The spelling of 166385716 in words is "one hundred sixty-six million, three hundred eighty-five thousand, seven hundred sixteen".