677739317 has 2 divisors, whose sum is σ = 677739318. Its totient is φ = 677739316.

The previous prime is 677739301. The next prime is 677739319. The reversal of 677739317 is 713937776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 628304356 + 49434961 = 25066^2 + 7031^2 .

It is a cyclic number.

It is not a de Polignac number, because 677739317 - 2⁴ = 677739301 is a prime.

Together with 677739319, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677739319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338869658 + 338869659.

It is an arithmetic number, because the mean of its divisors is an integer number (338869659).

Almost surely, 2^677739317 is an apocalyptic number.

It is an amenable number.

677739317 is a deficient number, since it is larger than the sum of its proper divisors (1).

677739317 is an equidigital number, since it uses as much as digits as its factorization.

677739317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166886, while the sum is 50.

The square root of 677739317 is about 26033.4269161784. The cubic root of 677739317 is about 878.3903585892.

The spelling of 677739317 in words is "six hundred seventy-seven million, seven hundred thirty-nine thousand, three hundred seventeen".