166335165 has 24 divisors (see below), whose sum is σ = 296109528. Its totient is φ = 86313600.

The previous prime is 166335151. The next prime is 166335167. The reversal of 166335165 is 561533661.

166335165 is a `hidden beast` number, since 1 + 6 + 633 + 5 + 16 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 95472441 + 70862724 = 9771^2 + 8418^2 .

It is not a de Polignac number, because 166335165 - 2¹² = 166331069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166335167) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48286 + ... + 51615.

It is an arithmetic number, because the mean of its divisors is an integer number (12337897).

Almost surely, 2^166335165 is an apocalyptic number.

166335165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166335165 is a deficient number, since it is larger than the sum of its proper divisors (129774363).

166335165 is a wasteful number, since it uses less digits than its factorization.

166335165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99949 (or 99946 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 166335165 is about 12897.0990924316. The cubic root of 166335165 is about 549.9561011795.

The spelling of 166335165 in words is "one hundred sixty-six million, three hundred thirty-five thousand, one hundred sixty-five".