165117206 has 8 divisors (see below), whose sum is σ = 248850264. Its totient is φ = 82167120.

The previous prime is 165117193. The next prime is 165117217. The reversal of 165117206 is 602711561.

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

It is a super-3 number, since 3×165117206³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 195215 + ... + 196058.

It is an arithmetic number, because the mean of its divisors is an integer number (31106283).

Almost surely, 2^165117206 is an apocalyptic number.

165117206 is a deficient number, since it is larger than the sum of its proper divisors (83733058).

165117206 is a wasteful number, since it uses less digits than its factorization.

165117206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391486.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 165117206 is about 12849.7940061310. The cubic root of 165117206 is about 548.6104936437.

Adding to 165117206 its reverse (602711561), we get a palindrome (767828767).

The spelling of 165117206 in words is "one hundred sixty-five million, one hundred seventeen thousand, two hundred six".