82684171 has 2 divisors, whose sum is σ = 82684172. Its totient is φ = 82684170.

The previous prime is 82684157. The next prime is 82684183. The reversal of 82684171 is 17148628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82684171 - 2⁹ = 82683659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82684171.

It is not a weakly prime, because it can be changed into another prime (82684111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41342085 + 41342086.

It is an arithmetic number, because the mean of its divisors is an integer number (41342086).

Almost surely, 2^82684171 is an apocalyptic number.

82684171 is a deficient number, since it is larger than the sum of its proper divisors (1).

82684171 is an equidigital number, since it uses as much as digits as its factorization.

82684171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 37.

The square root of 82684171 is about 9093.0836903660. The cubic root of 82684171 is about 435.6530833938.

The spelling of 82684171 in words is "eighty-two million, six hundred eighty-four thousand, one hundred seventy-one".