82665393 has 16 divisors (see below), whose sum is σ = 113065920. Its totient is φ = 53694144.

The previous prime is 82665391. The next prime is 82665397. The reversal of 82665393 is 39356628.

It is not a de Polignac number, because 82665393 - 2¹ = 82665391 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82665391) 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 in 15 ways as a sum of consecutive naturals, for example, 99303 + ... + 100131.

It is an arithmetic number, because the mean of its divisors is an integer number (7066620).

Almost surely, 2^82665393 is an apocalyptic number.

It is an amenable number.

82665393 is a deficient number, since it is larger than the sum of its proper divisors (30400527).

82665393 is a wasteful number, since it uses less digits than its factorization.

82665393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648.

The product of its digits is 233280, while the sum is 42.

The square root of 82665393 is about 9092.0510887258. The cubic root of 82665393 is about 435.6201012124.

The spelling of 82665393 in words is "eighty-two million, six hundred sixty-five thousand, three hundred ninety-three".