82145663 has 2 divisors, whose sum is σ = 82145664. Its totient is φ = 82145662.

The previous prime is 82145647. The next prime is 82145669. The reversal of 82145663 is 36654128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82145663 - 2⁴ = 82145647 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82145669) 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, 41072831 + 41072832.

It is an arithmetic number, because the mean of its divisors is an integer number (41072832).

Almost surely, 2^82145663 is an apocalyptic number.

82145663 is a deficient number, since it is larger than the sum of its proper divisors (1).

82145663 is an equidigital number, since it uses as much as digits as its factorization.

82145663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 82145663 is about 9063.4244631927. The cubic root of 82145663 is about 434.7052444552.

The spelling of 82145663 in words is "eighty-two million, one hundred forty-five thousand, six hundred sixty-three".