82857077 has 2 divisors, whose sum is σ = 82857078. Its totient is φ = 82857076.

The previous prime is 82857053. The next prime is 82857149. The reversal of 82857077 is 77075828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41460721 + 41396356 = 6439^2 + 6434^2 .

It is a cyclic number.

It is not a de Polignac number, because 82857077 - 2⁶ = 82857013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82857277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41428538 + 41428539.

It is an arithmetic number, because the mean of its divisors is an integer number (41428539).

Almost surely, 2^82857077 is an apocalyptic number.

It is an amenable number.

82857077 is a deficient number, since it is larger than the sum of its proper divisors (1).

82857077 is an equidigital number, since it uses as much as digits as its factorization.

82857077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 219520, while the sum is 44.

The square root of 82857077 is about 9102.5862808325. The cubic root of 82857077 is about 435.9565456931.

The spelling of 82857077 in words is "eighty-two million, eight hundred fifty-seven thousand, seventy-seven".