82639936 has 14 divisors (see below), whose sum is σ = 163988750. Its totient is φ = 41319936.

The previous prime is 82639919. The next prime is 82639957. The reversal of 82639936 is 63993628.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 41679936 + 40960000 = 6456^2 + 6400^2 .

It is a super-3 number, since 3×82639936³ (a number of 25 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 645561 + ... + 645688.

Almost surely, 2^82639936 is an apocalyptic number.

It is an amenable number.

82639936 is a deficient number, since it is larger than the sum of its proper divisors (81348814).

82639936 is a wasteful number, since it uses less digits than its factorization.

82639936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291261 (or 1291251 counting only the distinct ones).

The product of its digits is 419904, while the sum is 46.

The square root of 82639936 is about 9090.6510217916. The cubic root of 82639936 is about 435.5753798804.

The spelling of 82639936 in words is "eighty-two million, six hundred thirty-nine thousand, nine hundred thirty-six".