85665412 has 24 divisors (see below), whose sum is σ = 171997056. Its totient is φ = 36571008.

The previous prime is 85665407. The next prime is 85665439. The reversal of 85665412 is 21456658.

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, 1548 + ... + 13180.

It is an arithmetic number, because the mean of its divisors is an integer number (7166544).

Almost surely, 2^85665412 is an apocalyptic number.

It is an amenable number.

85665412 is an abundant number, since it is smaller than the sum of its proper divisors (86331644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85665412 is a wasteful number, since it uses less digits than its factorization.

85665412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11907 (or 11905 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 85665412 is about 9255.5611391206. The cubic root of 85665412 is about 440.8273208451.

The spelling of 85665412 in words is "eighty-five million, six hundred sixty-five thousand, four hundred twelve".