82684845 has 24 divisors (see below), whose sum is σ = 144362400. Its totient is φ = 43778016.

The previous prime is 82684813. The next prime is 82684859. The reversal of 82684845 is 54848628.

It is not a de Polignac number, because 82684845 - 2⁵ = 82684813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 82684845.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 355 + ... + 12864.

It is an arithmetic number, because the mean of its divisors is an integer number (6015100).

Almost surely, 2^82684845 is an apocalyptic number.

It is an amenable number.

82684845 is a deficient number, since it is larger than the sum of its proper divisors (61677555).

82684845 is a wasteful number, since it uses less digits than its factorization.

82684845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13369 (or 13366 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The square root of 82684845 is about 9093.1207514252. The cubic root of 82684845 is about 435.6542671326.

The spelling of 82684845 in words is "eighty-two million, six hundred eighty-four thousand, eight hundred forty-five".