86851085 has 8 divisors (see below), whose sum is σ = 107815320. Its totient is φ = 67084864.

The previous prime is 86851081. The next prime is 86851087. The reversal of 86851085 is 58015868.

It can be written as a sum of positive squares in 4 ways, for example, as 34128964 + 52722121 = 5842^2 + 7261^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 86851085 - 2² = 86851081 is a prime.

It is a super-3 number, since 3×86851085³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86851081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299342 + ... + 299631.

It is an arithmetic number, because the mean of its divisors is an integer number (13476915).

Almost surely, 2^86851085 is an apocalyptic number.

It is an amenable number.

86851085 is a deficient number, since it is larger than the sum of its proper divisors (20964235).

86851085 is a wasteful number, since it uses less digits than its factorization.

86851085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599007.

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 86851085 is about 9319.3929523333. The cubic root of 86851085 is about 442.8518019028.

The spelling of 86851085 in words is "eighty-six million, eight hundred fifty-one thousand, eighty-five".