82805877 has 24 divisors (see below), whose sum is σ = 149123520. Its totient is φ = 43015680.

The previous prime is 82805803. The next prime is 82805881. The reversal of 82805877 is 77850828.

It is a happy number.

It is not a de Polignac number, because 82805877 - 2¹⁶ = 82740341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82805077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59052 + ... + 60437.

It is an arithmetic number, because the mean of its divisors is an integer number (6213480).

Almost surely, 2^82805877 is an apocalyptic number.

It is an amenable number.

82805877 is a deficient number, since it is larger than the sum of its proper divisors (66317643).

82805877 is a wasteful number, since it uses less digits than its factorization.

82805877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119513 (or 119510 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The square root of 82805877 is about 9099.7734587186. The cubic root of 82805877 is about 435.8667300928.

The spelling of 82805877 in words is "eighty-two million, eight hundred five thousand, eight hundred seventy-seven".