82660271 has 2 divisors, whose sum is σ = 82660272. Its totient is φ = 82660270.

The previous prime is 82660267. The next prime is 82660313. The reversal of 82660271 is 17206628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82660271 - 2² = 82660267 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82660211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41330135 + 41330136.

It is an arithmetic number, because the mean of its divisors is an integer number (41330136).

Almost surely, 2^82660271 is an apocalyptic number.

82660271 is a deficient number, since it is larger than the sum of its proper divisors (1).

82660271 is an equidigital number, since it uses as much as digits as its factorization.

82660271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 82660271 is about 9091.7694097464. The cubic root of 82660271 is about 435.6111039277.

Adding to 82660271 its reverse (17206628), we get a palindrome (99866899).

The spelling of 82660271 in words is "eighty-two million, six hundred sixty thousand, two hundred seventy-one".