65585165 has 8 divisors (see below), whose sum is σ = 79158168. Its totient is φ = 52164160.

The previous prime is 65585137. The next prime is 65585173. The reversal of 65585165 is 56158556.

It can be written as a sum of positive squares in 4 ways, for example, as 40475044 + 25110121 = 6362^2 + 5011^2 .

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

It is not a de Polignac number, because 65585165 - 2⁶ = 65585101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37046 + ... + 38775.

It is an arithmetic number, because the mean of its divisors is an integer number (9894771).

Almost surely, 2^65585165 is an apocalyptic number.

It is an amenable number.

65585165 is a deficient number, since it is larger than the sum of its proper divisors (13573003).

65585165 is a wasteful number, since it uses less digits than its factorization.

65585165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75999.

The product of its digits is 180000, while the sum is 41.

The square root of 65585165 is about 8098.4668302093. The cubic root of 65585165 is about 403.2755311076.

The spelling of 65585165 in words is "sixty-five million, five hundred eighty-five thousand, one hundred sixty-five".