86211081 has 32 divisors (see below), whose sum is σ = 139962240. Its totient is φ = 52012800.

The previous prime is 86211079. The next prime is 86211089. The reversal of 86211081 is 18011268.

It is not a de Polignac number, because 86211081 - 2¹ = 86211079 is a prime.

It is a super-3 number, since 3×86211081³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (86211089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82941 + ... + 83973.

It is an arithmetic number, because the mean of its divisors is an integer number (4373820).

Almost surely, 2^86211081 is an apocalyptic number.

It is an amenable number.

86211081 is a deficient number, since it is larger than the sum of its proper divisors (53751159).

86211081 is a wasteful number, since it uses less digits than its factorization.

86211081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 86211081 is about 9284.9922455541. The cubic root of 86211081 is about 441.7613300987.

The spelling of 86211081 in words is "eighty-six million, two hundred eleven thousand, eighty-one".