86805211 has 2 divisors, whose sum is σ = 86805212. Its totient is φ = 86805210.

The previous prime is 86805163. The next prime is 86805221. The reversal of 86805211 is 11250868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86805211 - 2⁹ = 86804699 is a prime.

It is not a weakly prime, because it can be changed into another prime (86805221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43402605 + 43402606.

It is an arithmetic number, because the mean of its divisors is an integer number (43402606).

Almost surely, 2^86805211 is an apocalyptic number.

86805211 is a deficient number, since it is larger than the sum of its proper divisors (1).

86805211 is an equidigital number, since it uses as much as digits as its factorization.

86805211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 86805211 is about 9316.9314154393. The cubic root of 86805211 is about 442.7738179935.

The spelling of 86805211 in words is "eighty-six million, eight hundred five thousand, two hundred eleven".