82710391 has 2 divisors, whose sum is σ = 82710392. Its totient is φ = 82710390.

The previous prime is 82710379. The next prime is 82710403. The reversal of 82710391 is 19301728.

It is a balanced prime because it is at equal distance from previous prime (82710379) and next prime (82710403).

It is a cyclic number.

It is not a de Polignac number, because 82710391 - 2¹³ = 82702199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82710301) 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, 41355195 + 41355196.

It is an arithmetic number, because the mean of its divisors is an integer number (41355196).

Almost surely, 2^82710391 is an apocalyptic number.

82710391 is a deficient number, since it is larger than the sum of its proper divisors (1).

82710391 is an equidigital number, since it uses as much as digits as its factorization.

82710391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 82710391 is about 9094.5253312089. The cubic root of 82710391 is about 435.6991285497.

The spelling of 82710391 in words is "eighty-two million, seven hundred ten thousand, three hundred ninety-one".