166112566 has 16 divisors (see below), whose sum is σ = 255977568. Its totient is φ = 80798400.

The previous prime is 166112549. The next prime is 166112603. The reversal of 166112566 is 665211661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27871 + ... + 33301.

It is an arithmetic number, because the mean of its divisors is an integer number (15998598).

Almost surely, 2^166112566 is an apocalyptic number.

166112566 is a deficient number, since it is larger than the sum of its proper divisors (89865002).

166112566 is a wasteful number, since it uses less digits than its factorization.

166112566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5847.

The product of its digits is 12960, while the sum is 34.

The square root of 166112566 is about 12888.4663944164. The cubic root of 166112566 is about 549.7106643463.

The spelling of 166112566 in words is "one hundred sixty-six million, one hundred twelve thousand, five hundred sixty-six".