820763883 has 12 divisors (see below), whose sum is σ = 1207917360. Its totient is φ = 536851536.

The previous prime is 820763873. The next prime is 820763899. The reversal of 820763883 is 388367028.

820763883 is a `hidden beast` number, since 8 + 2 + 0 + 7 + 638 + 8 + 3 = 666.

It is not a de Polignac number, because 820763883 - 2²⁰ = 819715307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (820763803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 859863 + ... + 860816.

It is an arithmetic number, because the mean of its divisors is an integer number (100659780).

Almost surely, 2^820763883 is an apocalyptic number.

820763883 is a deficient number, since it is larger than the sum of its proper divisors (387153477).

820763883 is a wasteful number, since it uses less digits than its factorization.

820763883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720738 (or 1720735 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 820763883 is about 28648.9769974427. The cubic root of 820763883 is about 936.2807172203.

The spelling of 820763883 in words is "eight hundred twenty million, seven hundred sixty-three thousand, eight hundred eighty-three".