82188664 has 16 divisors (see below), whose sum is σ = 154905120. Its totient is φ = 40880640.

The previous prime is 82188647. The next prime is 82188679. The reversal of 82188664 is 46688128.

It is a self number, because there is not a number n which added to its sum of digits gives 82188664.

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, 25072 + ... + 28159.

It is an arithmetic number, because the mean of its divisors is an integer number (9681570).

Almost surely, 2^82188664 is an apocalyptic number.

It is an amenable number.

82188664 is a deficient number, since it is larger than the sum of its proper divisors (72716456).

82188664 is a wasteful number, since it uses less digits than its factorization.

82188664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53430 (or 53426 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 82188664 is about 9065.7963798003. The cubic root of 82188664 is about 434.7810833117.

The spelling of 82188664 in words is "eighty-two million, one hundred eighty-eight thousand, six hundred sixty-four".