85511686 has 8 divisors (see below), whose sum is σ = 138134304. Its totient is φ = 39466920.

The previous prime is 85511681. The next prime is 85511687. The reversal of 85511686 is 68611558.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85511681) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1644430 + ... + 1644481.

It is an arithmetic number, because the mean of its divisors is an integer number (17266788).

Almost surely, 2^85511686 is an apocalyptic number.

85511686 is a deficient number, since it is larger than the sum of its proper divisors (52622618).

85511686 is a wasteful number, since it uses less digits than its factorization.

85511686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288926.

The product of its digits is 57600, while the sum is 40.

The square root of 85511686 is about 9247.2528893721. The cubic root of 85511686 is about 440.5634757483.

The spelling of 85511686 in words is "eighty-five million, five hundred eleven thousand, six hundred eighty-six".