165206065 has 8 divisors (see below), whose sum is σ = 199761408. Its totient is φ = 131155440.

The previous prime is 165206059. The next prime is 165206071. The reversal of 165206065 is 560602561.

It is an interprime number because it is at equal distance from previous prime (165206059) and next prime (165206071).

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

It is not a de Polignac number, because 165206065 - 2³ = 165206057 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125457 + ... + 126766.

It is an arithmetic number, because the mean of its divisors is an integer number (24970176).

Almost surely, 2^165206065 is an apocalyptic number.

It is an amenable number.

165206065 is a deficient number, since it is larger than the sum of its proper divisors (34555343).

165206065 is a wasteful number, since it uses less digits than its factorization.

165206065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252359.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 165206065 is about 12853.2511451383. The cubic root of 165206065 is about 548.7088888762.

The spelling of 165206065 in words is "one hundred sixty-five million, two hundred six thousand, sixty-five".