86211 has 16 divisors (see below), whose sum is σ = 133120. Its totient is φ = 55080.

The previous prime is 86209. The next prime is 86239. The reversal of 86211 is 11268.

It is not a de Polignac number, because 86211 - 2¹ = 86209 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 786 + ... + 888.

It is an arithmetic number, because the mean of its divisors is an integer number (8320).

2⁸⁶²¹¹ is an apocalyptic number.

86211 is the 186-th heptagonal number.

86211 is a deficient number, since it is larger than the sum of its proper divisors (46909).

86211 is a wasteful number, since it uses less digits than its factorization.

86211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 137 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 86211 is about 293.6170975948. The cubic root of 86211 is about 44.1761191746.

Adding to 86211 its reverse (11268), we get a palindrome (97479).

The spelling of 86211 in words is "eighty-six thousand, two hundred eleven".