82665211 has 2 divisors, whose sum is σ = 82665212. Its totient is φ = 82665210.

The previous prime is 82665199. The next prime is 82665217. The reversal of 82665211 is 11256628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82665211 - 2²³ = 74276603 is a prime.

It is not a weakly prime, because it can be changed into another prime (82665217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41332605 + 41332606.

It is an arithmetic number, because the mean of its divisors is an integer number (41332606).

Almost surely, 2^82665211 is an apocalyptic number.

82665211 is a deficient number, since it is larger than the sum of its proper divisors (1).

82665211 is an equidigital number, since it uses as much as digits as its factorization.

82665211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 82665211 is about 9092.0410799776. The cubic root of 82665211 is about 435.6197815183.

The spelling of 82665211 in words is "eighty-two million, six hundred sixty-five thousand, two hundred eleven".