82420673 has 2 divisors, whose sum is σ = 82420674. Its totient is φ = 82420672.

The previous prime is 82420669. The next prime is 82420693. The reversal of 82420673 is 37602428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74166544 + 8254129 = 8612^2 + 2873^2 .

It is a cyclic number.

It is not a de Polignac number, because 82420673 - 2² = 82420669 is a prime.

It is not a weakly prime, because it can be changed into another prime (82420633) 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, 41210336 + 41210337.

It is an arithmetic number, because the mean of its divisors is an integer number (41210337).

Almost surely, 2^82420673 is an apocalyptic number.

It is an amenable number.

82420673 is a deficient number, since it is larger than the sum of its proper divisors (1).

82420673 is an equidigital number, since it uses as much as digits as its factorization.

82420673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 82420673 is about 9078.5832044433. The cubic root of 82420673 is about 435.1898110298.

The spelling of 82420673 in words is "eighty-two million, four hundred twenty thousand, six hundred seventy-three".