165266065 has 8 divisors (see below), whose sum is σ = 198576000. Its totient is φ = 132041712.

The previous prime is 165266051. The next prime is 165266081. The reversal of 165266065 is 560662561.

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

It is a cyclic number.

It is not a de Polignac number, because 165266065 - 2⁵ = 165266033 is a prime.

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, 17065 + ... + 24934.

It is an arithmetic number, because the mean of its divisors is an integer number (24822000).

Almost surely, 2^165266065 is an apocalyptic number.

It is an amenable number.

165266065 is a deficient number, since it is larger than the sum of its proper divisors (33309935).

165266065 is an equidigital number, since it uses as much as digits as its factorization.

165266065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42791.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 165266065 is about 12855.5849730769. The cubic root of 165266065 is about 548.7753080449.

The spelling of 165266065 in words is "one hundred sixty-five million, two hundred sixty-six thousand, sixty-five".