82661713 has 2 divisors, whose sum is σ = 82661714. Its totient is φ = 82661712.

The previous prime is 82661681. The next prime is 82661731. The reversal of 82661713 is 31716628.

Together with next prime (82661731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54656449 + 28005264 = 7393^2 + 5292^2 .

It is a cyclic number.

It is not a de Polignac number, because 82661713 - 2⁵ = 82661681 is a prime.

It is not a weakly prime, because it can be changed into another prime (82661743) 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, 41330856 + 41330857.

It is an arithmetic number, because the mean of its divisors is an integer number (41330857).

Almost surely, 2^82661713 is an apocalyptic number.

It is an amenable number.

82661713 is a deficient number, since it is larger than the sum of its proper divisors (1).

82661713 is an equidigital number, since it uses as much as digits as its factorization.

82661713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 82661713 is about 9091.8487118957. The cubic root of 82661713 is about 435.6136369767.

The spelling of 82661713 in words is "eighty-two million, six hundred sixty-one thousand, seven hundred thirteen".