166116065 has 16 divisors (see below), whose sum is σ = 203001600. Its totient is φ = 130470912.

The previous prime is 166116059. The next prime is 166116091. The reversal of 166116065 is 560611661.

It is a cyclic number.

It is not a de Polignac number, because 166116065 - 2⁸ = 166115809 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75146 + ... + 77324.

It is an arithmetic number, because the mean of its divisors is an integer number (12687600).

Almost surely, 2^166116065 is an apocalyptic number.

It is an amenable number.

166116065 is a deficient number, since it is larger than the sum of its proper divisors (36885535).

166116065 is a wasteful number, since it uses less digits than its factorization.

166116065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 166116065 is about 12888.6021352201. The cubic root of 166116065 is about 549.7145240264.

The spelling of 166116065 in words is "one hundred sixty-six million, one hundred sixteen thousand, sixty-five".