820127027 has 2 divisors, whose sum is σ = 820127028. Its totient is φ = 820127026.

The previous prime is 820126999. The next prime is 820127071. The reversal of 820127027 is 720721028.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 820127027 - 2²⁰ = 819078451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (820127827) by changing a digit.

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 as a sum of consecutive naturals, namely, 410063513 + 410063514.

It is an arithmetic number, because the mean of its divisors is an integer number (410063514).

Almost surely, 2^820127027 is an apocalyptic number.

820127027 is a deficient number, since it is larger than the sum of its proper divisors (1).

820127027 is an equidigital number, since it uses as much as digits as its factorization.

820127027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 820127027 is about 28637.8600282912. The cubic root of 820127027 is about 936.0384915350.

The spelling of 820127027 in words is "eight hundred twenty million, one hundred twenty-seven thousand, twenty-seven".