82068321 has 4 divisors (see below), whose sum is σ = 109424432. Its totient is φ = 54712212.

The previous prime is 82068319. The next prime is 82068373. The reversal of 82068321 is 12386028.

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 not a de Polignac number, because 82068321 - 2¹ = 82068319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82068121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13678051 + ... + 13678056.

It is an arithmetic number, because the mean of its divisors is an integer number (27356108).

Almost surely, 2^82068321 is an apocalyptic number.

It is an amenable number.

82068321 is a deficient number, since it is larger than the sum of its proper divisors (27356111).

82068321 is a wasteful number, since it uses less digits than its factorization.

82068321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27356110.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 82068321 is about 9059.1567488371. The cubic root of 82068321 is about 434.5687733422.

The spelling of 82068321 in words is "eighty-two million, sixty-eight thousand, three hundred twenty-one".