861060647 has 2 divisors, whose sum is σ = 861060648. Its totient is φ = 861060646.

The previous prime is 861060581. The next prime is 861060667. The reversal of 861060647 is 746060168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861060647 - 2⁸ = 861060391 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 861060647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861060667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430530323 + 430530324.

It is an arithmetic number, because the mean of its divisors is an integer number (430530324).

Almost surely, 2^861060647 is an apocalyptic number.

861060647 is a deficient number, since it is larger than the sum of its proper divisors (1).

861060647 is an equidigital number, since it uses as much as digits as its factorization.

861060647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 861060647 is about 29343.8349061604. The cubic root of 861060647 is about 951.3593271810.

The spelling of 861060647 in words is "eight hundred sixty-one million, sixty thousand, six hundred forty-seven".