82665293 has 2 divisors, whose sum is σ = 82665294. Its totient is φ = 82665292.

The previous prime is 82665281. The next prime is 82665347. The reversal of 82665293 is 39256628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58033924 + 24631369 = 7618^2 + 4963^2 .

It is a cyclic number.

It is not a de Polignac number, because 82665293 - 2¹² = 82661197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 82665293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82667293) 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, 41332646 + 41332647.

It is an arithmetic number, because the mean of its divisors is an integer number (41332647).

Almost surely, 2^82665293 is an apocalyptic number.

It is an amenable number.

82665293 is a deficient number, since it is larger than the sum of its proper divisors (1).

82665293 is an equidigital number, since it uses as much as digits as its factorization.

82665293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 82665293 is about 9092.0455894150. The cubic root of 82665293 is about 435.6199255564.

The spelling of 82665293 in words is "eighty-two million, six hundred sixty-five thousand, two hundred ninety-three".