82065397 has 4 divisors (see below), whose sum is σ = 82131840. Its totient is φ = 81998956.

The previous prime is 82065391. The next prime is 82065407. The reversal of 82065397 is 79356028.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82065397 - 2¹¹ = 82063349 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82065391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31333 + ... + 33850.

It is an arithmetic number, because the mean of its divisors is an integer number (20532960).

Almost surely, 2^82065397 is an apocalyptic number.

It is an amenable number.

82065397 is a deficient number, since it is larger than the sum of its proper divisors (66443).

82065397 is a wasteful number, since it uses less digits than its factorization.

82065397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66442.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 82065397 is about 9058.9953637255. The cubic root of 82065397 is about 434.5636122189.

The spelling of 82065397 in words is "eighty-two million, sixty-five thousand, three hundred ninety-seven".