82218875 has 16 divisors (see below), whose sum is σ = 103413024. Its totient is φ = 65260000.

The previous prime is 82218869. The next prime is 82218883. The reversal of 82218875 is 57881228.

It is not a de Polignac number, because 82218875 - 2⁶ = 82218811 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 13865 + ... + 18885.

It is an arithmetic number, because the mean of its divisors is an integer number (6463314).

Almost surely, 2^82218875 is an apocalyptic number.

82218875 is a deficient number, since it is larger than the sum of its proper divisors (21194149).

82218875 is a wasteful number, since it uses less digits than its factorization.

82218875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167 (or 5157 counting only the distinct ones).

The product of its digits is 71680, while the sum is 41.

The square root of 82218875 is about 9067.4624344411. The cubic root of 82218875 is about 434.8343492229.

The spelling of 82218875 in words is "eighty-two million, two hundred eighteen thousand, eight hundred seventy-five".