82856641 has 8 divisors (see below), whose sum is σ = 95385600. Its totient is φ = 70500768.

The previous prime is 82856639. The next prime is 82856647. The reversal of 82856641 is 14665828.

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 82856641 - 2¹ = 82856639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82856594 and 82856603.

It is not an unprimeable number, because it can be changed into a prime (82856647) 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 7 ways as a sum of consecutive naturals, for example, 42241 + ... + 44158.

It is an arithmetic number, because the mean of its divisors is an integer number (11923200).

Almost surely, 2^82856641 is an apocalyptic number.

It is an amenable number.

82856641 is a deficient number, since it is larger than the sum of its proper divisors (12528959).

82856641 is a wasteful number, since it uses less digits than its factorization.

82856641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86543.

The product of its digits is 92160, while the sum is 40.

The square root of 82856641 is about 9102.5623315636. The cubic root of 82856641 is about 435.9557810133.

The spelling of 82856641 in words is "eighty-two million, eight hundred fifty-six thousand, six hundred forty-one".