677169947 has 2 divisors, whose sum is σ = 677169948. Its totient is φ = 677169946.

The previous prime is 677169943. The next prime is 677169949. The reversal of 677169947 is 749961776.

677169947 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 is a cyclic number.

It is not a de Polignac number, because 677169947 - 2² = 677169943 is a prime.

Together with 677169949, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 677169892 and 677169901.

It is not a weakly prime, because it can be changed into another prime (677169943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338584973 + 338584974.

It is an arithmetic number, because the mean of its divisors is an integer number (338584974).

Almost surely, 2^677169947 is an apocalyptic number.

677169947 is a deficient number, since it is larger than the sum of its proper divisors (1).

677169947 is an equidigital number, since it uses as much as digits as its factorization.

677169947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000752, while the sum is 56.

The square root of 677169947 is about 26022.4892544891. The cubic root of 677169947 is about 878.1443105761.

The spelling of 677169947 in words is "six hundred seventy-seven million, one hundred sixty-nine thousand, nine hundred forty-seven".