165165207 has 8 divisors (see below), whose sum is σ = 222169584. Its totient is φ = 109135488.

The previous prime is 165165197. The next prime is 165165227. The reversal of 165165207 is 702561561.

165165207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 165165207 - 2¹⁰ = 165164183 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165165227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243268 + ... + 243945.

It is an arithmetic number, because the mean of its divisors is an integer number (27771198).

Almost surely, 2^165165207 is an apocalyptic number.

165165207 is a deficient number, since it is larger than the sum of its proper divisors (57004377).

165165207 is a wasteful number, since it uses less digits than its factorization.

165165207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487329.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 165165207 is about 12851.6616435386. The cubic root of 165165207 is about 548.6636504316.

The spelling of 165165207 in words is "one hundred sixty-five million, one hundred sixty-five thousand, two hundred seven".