861106027 has 2 divisors, whose sum is σ = 861106028. Its totient is φ = 861106026.

The previous prime is 861106009. The next prime is 861106031. The reversal of 861106027 is 720601168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861106027 - 2⁷ = 861105899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 861106027.

It is not a weakly prime, because it can be changed into another prime (861106097) 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 as a sum of consecutive naturals, namely, 430553013 + 430553014.

It is an arithmetic number, because the mean of its divisors is an integer number (430553014).

Almost surely, 2^861106027 is an apocalyptic number.

861106027 is a deficient number, since it is larger than the sum of its proper divisors (1).

861106027 is an equidigital number, since it uses as much as digits as its factorization.

861106027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 861106027 is about 29344.6081418717. The cubic root of 861106027 is about 951.3760398745.

The spelling of 861106027 in words is "eight hundred sixty-one million, one hundred six thousand, twenty-seven".