165669275 has 12 divisors (see below), whose sum is σ = 205606632. Its totient is φ = 132421440.

The previous prime is 165669181. The next prime is 165669293. The reversal of 165669275 is 572966561.

It is a happy number.

It is not a de Polignac number, because 165669275 - 2¹² = 165665179 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38639 + ... + 42711.

It is an arithmetic number, because the mean of its divisors is an integer number (17133886).

Almost surely, 2^165669275 is an apocalyptic number.

165669275 is a deficient number, since it is larger than the sum of its proper divisors (39937357).

165669275 is a wasteful number, since it uses less digits than its factorization.

165669275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5710 (or 5705 counting only the distinct ones).

The product of its digits is 680400, while the sum is 47.

The square root of 165669275 is about 12871.2577085536. The cubic root of 165669275 is about 549.2212394491.

The spelling of 165669275 in words is "one hundred sixty-five million, six hundred sixty-nine thousand, two hundred seventy-five".