86571065 has 32 divisors (see below), whose sum is σ = 124348416. Its totient is φ = 56609280.

The previous prime is 86571047. The next prime is 86571071. The reversal of 86571065 is 56017568.

It is a happy number.

It is not a de Polignac number, because 86571065 - 2¹² = 86566969 is a prime.

It is a super-3 number, since 3×86571065³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 78659 + ... + 79751.

It is an arithmetic number, because the mean of its divisors is an integer number (3885888).

Almost surely, 2^86571065 is an apocalyptic number.

It is an amenable number.

86571065 is a deficient number, since it is larger than the sum of its proper divisors (37777351).

86571065 is a wasteful number, since it uses less digits than its factorization.

86571065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 86571065 is about 9304.3573125714. The cubic root of 86571065 is about 442.3753508481.

The spelling of 86571065 in words is "eighty-six million, five hundred seventy-one thousand, sixty-five".