82600081 has 2 divisors, whose sum is σ = 82600082. Its totient is φ = 82600080.

The previous prime is 82600069. The next prime is 82600139. The reversal of 82600081 is 18000628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55726225 + 26873856 = 7465^2 + 5184^2 .

It is a cyclic number.

It is not a de Polignac number, because 82600081 - 2¹⁹ = 82075793 is a prime.

It is a super-2 number, since 2×82600081² = 13645546762413122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82600031) 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, 41300040 + 41300041.

It is an arithmetic number, because the mean of its divisors is an integer number (41300041).

Almost surely, 2^82600081 is an apocalyptic number.

It is an amenable number.

82600081 is a deficient number, since it is larger than the sum of its proper divisors (1).

82600081 is an equidigital number, since it uses as much as digits as its factorization.

82600081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 82600081 is about 9088.4586702037. The cubic root of 82600081 is about 435.5053465564.

The spelling of 82600081 in words is "eighty-two million, six hundred thousand, eighty-one".