165679211 has 2 divisors, whose sum is σ = 165679212. Its totient is φ = 165679210.

The previous prime is 165679193. The next prime is 165679249. The reversal of 165679211 is 112976561.

It is an a-pointer prime, because the next prime (165679249) can be obtained adding 165679211 to its sum of digits (38).

It is a weak prime.

It is an emirp because it is prime and its reverse (112976561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165679211 - 2¹⁰ = 165678187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165679711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82839605 + 82839606.

It is an arithmetic number, because the mean of its divisors is an integer number (82839606).

Almost surely, 2^165679211 is an apocalyptic number.

165679211 is a deficient number, since it is larger than the sum of its proper divisors (1).

165679211 is an equidigital number, since it uses as much as digits as its factorization.

165679211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 38.

The square root of 165679211 is about 12871.6436790334. The cubic root of 165679211 is about 549.2322190613.

The spelling of 165679211 in words is "one hundred sixty-five million, six hundred seventy-nine thousand, two hundred eleven".