82966591 has 2 divisors, whose sum is σ = 82966592. Its totient is φ = 82966590.

The previous prime is 82966577. The next prime is 82966619. The reversal of 82966591 is 19566928.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82966591 - 2⁷ = 82966463 is a prime.

It is a super-2 number, since 2×82966591² = 13766910444322562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82966501) 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, 41483295 + 41483296.

It is an arithmetic number, because the mean of its divisors is an integer number (41483296).

Almost surely, 2^82966591 is an apocalyptic number.

82966591 is a deficient number, since it is larger than the sum of its proper divisors (1).

82966591 is an equidigital number, since it uses as much as digits as its factorization.

82966591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 46.

The square root of 82966591 is about 9108.5998375162. The cubic root of 82966591 is about 436.1485322151.

The spelling of 82966591 in words is "eighty-two million, nine hundred sixty-six thousand, five hundred ninety-one".