82068389 has 8 divisors (see below), whose sum is σ = 89193720. Its totient is φ = 75059136.

The previous prime is 82068379. The next prime is 82068409. The reversal of 82068389 is 98386028.

It can be written as a sum of positive squares in 4 ways, for example, as 11222500 + 70845889 = 3350^2 + 8417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82068389 - 2⁴ = 82068373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82068319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27542 + ... + 30375.

It is an arithmetic number, because the mean of its divisors is an integer number (11149215).

Almost surely, 2^82068389 is an apocalyptic number.

It is an amenable number.

82068389 is a deficient number, since it is larger than the sum of its proper divisors (7125331).

82068389 is a wasteful number, since it uses less digits than its factorization.

82068389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58039.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 82068389 is about 9059.1605019450. The cubic root of 82068389 is about 434.5688933669.

The spelling of 82068389 in words is "eighty-two million, sixty-eight thousand, three hundred eighty-nine".