82810864 has 20 divisors (see below), whose sum is σ = 161674920. Its totient is φ = 41088320.

The previous prime is 82810841. The next prime is 82810907. The reversal of 82810864 is 46801828.

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 3 ways as a sum of consecutive naturals, for example, 17659 + ... + 21850.

It is an arithmetic number, because the mean of its divisors is an integer number (8083746).

Almost surely, 2^82810864 is an apocalyptic number.

It is an amenable number.

82810864 is a deficient number, since it is larger than the sum of its proper divisors (78864056).

82810864 is a wasteful number, since it uses less digits than its factorization.

82810864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39648 (or 39642 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 82810864 is about 9100.0474724036. The cubic root of 82810864 is about 435.8754799699.

The spelling of 82810864 in words is "eighty-two million, eight hundred ten thousand, eight hundred sixty-four".