82805768 has 8 divisors (see below), whose sum is σ = 155260830. Its totient is φ = 41402880.

The previous prime is 82805753. The next prime is 82805771. The reversal of 82805768 is 86750828.

It can be written as a sum of positive squares in only one way, i.e., 61811044 + 20994724 = 7862^2 + 4582^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5175353 + ... + 5175368.

Almost surely, 2^82805768 is an apocalyptic number.

It is an amenable number.

82805768 is a deficient number, since it is larger than the sum of its proper divisors (72455062).

82805768 is a wasteful number, since it uses less digits than its factorization.

82805768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10350727 (or 10350723 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 82805768 is about 9099.7674695566. The cubic root of 82805768 is about 435.8665388443.

The spelling of 82805768 in words is "eighty-two million, eight hundred five thousand, seven hundred sixty-eight".