85251686 has 16 divisors (see below), whose sum is σ = 137867184. Its totient is φ = 39303264.

The previous prime is 85251659. The next prime is 85251697. The reversal of 85251686 is 68615258.

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 41561 + ... + 43563.

It is an arithmetic number, because the mean of its divisors is an integer number (8616699).

Almost surely, 2^85251686 is an apocalyptic number.

85251686 is a deficient number, since it is larger than the sum of its proper divisors (52615498).

85251686 is a wasteful number, since it uses less digits than its factorization.

85251686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655.

The product of its digits is 115200, while the sum is 41.

The square root of 85251686 is about 9233.1839578772. The cubic root of 85251686 is about 440.1165084030.

The spelling of 85251686 in words is "eighty-five million, two hundred fifty-one thousand, six hundred eighty-six".