82531864 has 16 divisors (see below), whose sum is σ = 155560320. Its totient is φ = 41049120.

The previous prime is 82531849. The next prime is 82531879. The reversal of 82531864 is 46813528.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (82531849) and next prime (82531879).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25479 + ... + 28534.

It is an arithmetic number, because the mean of its divisors is an integer number (9722520).

Almost surely, 2^82531864 is an apocalyptic number.

It is an amenable number.

82531864 is a deficient number, since it is larger than the sum of its proper divisors (73028456).

82531864 is a wasteful number, since it uses less digits than its factorization.

82531864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54210 (or 54206 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 82531864 is about 9084.7049484284. The cubic root of 82531864 is about 435.3854231447.

The spelling of 82531864 in words is "eighty-two million, five hundred thirty-one thousand, eight hundred sixty-four".