856067677 has 2 divisors, whose sum is σ = 856067678. Its totient is φ = 856067676.

The previous prime is 856067671. The next prime is 856067701. The reversal of 856067677 is 776760658.

856067677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 816302041 + 39765636 = 28571^2 + 6306^2 .

It is a cyclic number.

It is not a de Polignac number, because 856067677 - 2²⁷ = 721849949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856067671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428033838 + 428033839.

It is an arithmetic number, because the mean of its divisors is an integer number (428033839).

Almost surely, 2^856067677 is an apocalyptic number.

It is an amenable number.

856067677 is a deficient number, since it is larger than the sum of its proper divisors (1).

856067677 is an equidigital number, since it uses as much as digits as its factorization.

856067677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The square root of 856067677 is about 29258.6342299158. The cubic root of 856067677 is about 949.5169019276.

The spelling of 856067677 in words is "eight hundred fifty-six million, sixty-seven thousand, six hundred seventy-seven".