677872109 has 2 divisors, whose sum is σ = 677872110. Its totient is φ = 677872108.

The previous prime is 677872051. The next prime is 677872141. The reversal of 677872109 is 901278776.

677872109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 676156009 + 1716100 = 26003^2 + 1310^2 .

It is a cyclic number.

It is not a de Polignac number, because 677872109 - 2⁸ = 677871853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677872159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338936054 + 338936055.

It is an arithmetic number, because the mean of its divisors is an integer number (338936055).

Almost surely, 2^677872109 is an apocalyptic number.

It is an amenable number.

677872109 is a deficient number, since it is larger than the sum of its proper divisors (1).

677872109 is an equidigital number, since it uses as much as digits as its factorization.

677872109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 47.

The square root of 677872109 is about 26035.9772046298. The cubic root of 677872109 is about 878.4477236125.

It can be divided in two parts, 67787 and 2109, that added together give a palindrome (69896).

The spelling of 677872109 in words is "six hundred seventy-seven million, eight hundred seventy-two thousand, one hundred nine".