82620868 has 24 divisors (see below), whose sum is σ = 158427360. Its totient is φ = 37389120.

The previous prime is 82620847. The next prime is 82620869. The reversal of 82620868 is 86802628.

It is a self number, because there is not a number n which added to its sum of digits gives 82620868.

It is not an unprimeable number, because it can be changed into a prime (82620869) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6223 + ... + 14281.

It is an arithmetic number, because the mean of its divisors is an integer number (6601140).

Almost surely, 2^82620868 is an apocalyptic number.

It is an amenable number.

82620868 is a deficient number, since it is larger than the sum of its proper divisors (75806492).

82620868 is a wasteful number, since it uses less digits than its factorization.

82620868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8307 (or 8305 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 82620868 is about 9089.6021915153. The cubic root of 82620868 is about 435.5418763443.

The spelling of 82620868 in words is "eighty-two million, six hundred twenty thousand, eight hundred sixty-eight".