82399668 has 72 divisors (see below), whose sum is σ = 213486336. Its totient is φ = 24710400.

The previous prime is 82399651. The next prime is 82399711. The reversal of 82399668 is 86699328.

It is a self number, because there is not a number n which added to its sum of digits gives 82399668.

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 23 ways as a sum of consecutive naturals, for example, 82653 + ... + 83643.

It is an arithmetic number, because the mean of its divisors is an integer number (2965088).

Almost surely, 2^82399668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82399668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106743168).

82399668 is an abundant number, since it is smaller than the sum of its proper divisors (131086668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82399668 is a wasteful number, since it uses less digits than its factorization.

82399668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065 (or 1050 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 82399668 is about 9077.4262872248. The cubic root of 82399668 is about 435.1528383533.

The spelling of 82399668 in words is "eighty-two million, three hundred ninety-nine thousand, six hundred sixty-eight".