166585111 has 8 divisors (see below), whose sum is σ = 207690624. Its totient is φ = 129806520.

The previous prime is 166585109. The next prime is 166585121. The reversal of 166585111 is 111585661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166585111 - 2¹ = 166585109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166585121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081645 + ... + 1081798.

It is an arithmetic number, because the mean of its divisors is an integer number (25961328).

Almost surely, 2^166585111 is an apocalyptic number.

166585111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166585111 is a deficient number, since it is larger than the sum of its proper divisors (41105513).

166585111 is a wasteful number, since it uses less digits than its factorization.

166585111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163461.

The product of its digits is 7200, while the sum is 34.

The square root of 166585111 is about 12906.7854634684. The cubic root of 166585111 is about 550.2314298776.

The spelling of 166585111 in words is "one hundred sixty-six million, five hundred eighty-five thousand, one hundred eleven".