820804227 has 12 divisors (see below), whose sum is σ = 1112655960. Its totient is φ = 538224960.

The previous prime is 820804223. The next prime is 820804279. The reversal of 820804227 is 722408028.

820804227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 820804227 - 2² = 820804223 is a prime.

It is a super-2 number, since 2×820804227² = 1347439158122135058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (820804223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25602 + ... + 47927.

It is an arithmetic number, because the mean of its divisors is an integer number (92721330).

Almost surely, 2^820804227 is an apocalyptic number.

820804227 is a deficient number, since it is larger than the sum of its proper divisors (291851733).

820804227 is an equidigital number, since it uses as much as digits as its factorization.

820804227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73654 (or 73593 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 820804227 is about 28649.6810977016. The cubic root of 820804227 is about 936.2960576818.

The spelling of 820804227 in words is "eight hundred twenty million, eight hundred four thousand, two hundred twenty-seven".