82090643 has 2 divisors, whose sum is σ = 82090644. Its totient is φ = 82090642.

The previous prime is 82090609. The next prime is 82090649. The reversal of 82090643 is 34609028.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82090643 - 2⁶ = 82090579 is a prime.

It is not a weakly prime, because it can be changed into another prime (82090649) 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, 41045321 + 41045322.

It is an arithmetic number, because the mean of its divisors is an integer number (41045322).

Almost surely, 2^82090643 is an apocalyptic number.

82090643 is a deficient number, since it is larger than the sum of its proper divisors (1).

82090643 is an equidigital number, since it uses as much as digits as its factorization.

82090643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 82090643 is about 9060.3886781970. The cubic root of 82090643 is about 434.6081696431.

The spelling of 82090643 in words is "eighty-two million, ninety thousand, six hundred forty-three".