85665512 has 16 divisors (see below), whose sum is σ = 162183840. Its totient is φ = 42416496.

The previous prime is 85665469. The next prime is 85665521. The reversal of 85665512 is 21556658.

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 3 ways as a sum of consecutive naturals, for example, 51158 + ... + 52805.

It is an arithmetic number, because the mean of its divisors is an integer number (10136490).

Almost surely, 2^85665512 is an apocalyptic number.

It is an amenable number.

85665512 is a deficient number, since it is larger than the sum of its proper divisors (76518328).

85665512 is a wasteful number, since it uses less digits than its factorization.

85665512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104072 (or 104068 counting only the distinct ones).

The product of its digits is 72000, while the sum is 38.

The square root of 85665512 is about 9255.5665412767. The cubic root of 85665512 is about 440.8274923757.

The spelling of 85665512 in words is "eighty-five million, six hundred sixty-five thousand, five hundred twelve".