85985785 has 8 divisors (see below), whose sum is σ = 106511616. Its totient is φ = 66569520.

The previous prime is 85985771. The next prime is 85985791. The reversal of 85985785 is 58758958.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-85985785 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277219 + ... + 277528.

It is an arithmetic number, because the mean of its divisors is an integer number (13313952).

Almost surely, 2^85985785 is an apocalyptic number.

It is an amenable number.

85985785 is a deficient number, since it is larger than the sum of its proper divisors (20525831).

85985785 is a wasteful number, since it uses less digits than its factorization.

85985785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554783.

The product of its digits is 4032000, while the sum is 55.

The square root of 85985785 is about 9272.8520423870. The cubic root of 85985785 is about 441.3761751055.

The spelling of 85985785 in words is "eighty-five million, nine hundred eighty-five thousand, seven hundred eighty-five".