82782163 has 4 divisors (see below), whose sum is σ = 87651720. Its totient is φ = 77912608.

The previous prime is 82782151. The next prime is 82782173. The reversal of 82782163 is 36128728.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82782163 - 2¹⁷ = 82651091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82782173) 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 in 3 ways as a sum of consecutive naturals, for example, 2434753 + ... + 2434786.

It is an arithmetic number, because the mean of its divisors is an integer number (21912930).

Almost surely, 2^82782163 is an apocalyptic number.

82782163 is a deficient number, since it is larger than the sum of its proper divisors (4869557).

82782163 is a wasteful number, since it uses less digits than its factorization.

82782163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4869556.

The product of its digits is 32256, while the sum is 37.

The square root of 82782163 is about 9098.4703659461. The cubic root of 82782163 is about 435.8251181893.

The spelling of 82782163 in words is "eighty-two million, seven hundred eighty-two thousand, one hundred sixty-three".