82687673 has 2 divisors, whose sum is σ = 82687674. Its totient is φ = 82687672.

The previous prime is 82687651. The next prime is 82687681. The reversal of 82687673 is 37678628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67108864 + 15578809 = 8192^2 + 3947^2 .

It is a cyclic number.

It is not a de Polignac number, because 82687673 - 2⁸ = 82687417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (82687603) 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, 41343836 + 41343837.

It is an arithmetic number, because the mean of its divisors is an integer number (41343837).

Almost surely, 2^82687673 is an apocalyptic number.

It is an amenable number.

82687673 is a deficient number, since it is larger than the sum of its proper divisors (1).

82687673 is an equidigital number, since it uses as much as digits as its factorization.

82687673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 47.

The square root of 82687673 is about 9093.2762522646. The cubic root of 82687673 is about 435.6592338477.

The spelling of 82687673 in words is "eighty-two million, six hundred eighty-seven thousand, six hundred seventy-three".