82727081 has 2 divisors, whose sum is σ = 82727082. Its totient is φ = 82727080.

The previous prime is 82727069. The next prime is 82727089. The reversal of 82727081 is 18072728.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42784681 + 39942400 = 6541^2 + 6320^2 .

It is a cyclic number.

It is not a de Polignac number, because 82727081 - 2⁶ = 82727017 is a prime.

It is a super-2 number, since 2×82727081² = 13687539861561122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82727089) 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, 41363540 + 41363541.

It is an arithmetic number, because the mean of its divisors is an integer number (41363541).

Almost surely, 2^82727081 is an apocalyptic number.

It is an amenable number.

82727081 is a deficient number, since it is larger than the sum of its proper divisors (1).

82727081 is an equidigital number, since it uses as much as digits as its factorization.

82727081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 82727081 is about 9095.4428699212. The cubic root of 82727081 is about 435.7284329265.

The spelling of 82727081 in words is "eighty-two million, seven hundred twenty-seven thousand, eighty-one".