82605783 has 16 divisors (see below), whose sum is σ = 119034720. Its totient is φ = 50653824.

The previous prime is 82605769. The next prime is 82605791. The reversal of 82605783 is 38750628.

It is not a de Polignac number, because 82605783 - 2¹⁰ = 82604759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82605763) 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 15 ways as a sum of consecutive naturals, for example, 7813 + ... + 15041.

It is an arithmetic number, because the mean of its divisors is an integer number (7439670).

Almost surely, 2^82605783 is an apocalyptic number.

82605783 is a deficient number, since it is larger than the sum of its proper divisors (36428937).

82605783 is a wasteful number, since it uses less digits than its factorization.

82605783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7538.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 82605783 is about 9088.7723593453. The cubic root of 82605783 is about 435.5153675084.

The spelling of 82605783 in words is "eighty-two million, six hundred five thousand, seven hundred eighty-three".