677564213 has 2 divisors, whose sum is σ = 677564214. Its totient is φ = 677564212.

The previous prime is 677564203. The next prime is 677564299. The reversal of 677564213 is 312465776.

677564213 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., 376437604 + 301126609 = 19402^2 + 17353^2 .

It is a cyclic number.

It is not a de Polignac number, because 677564213 - 2¹⁰ = 677563189 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 (677564203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338782106 + 338782107.

It is an arithmetic number, because the mean of its divisors is an integer number (338782107).

Almost surely, 2^677564213 is an apocalyptic number.

It is an amenable number.

677564213 is a deficient number, since it is larger than the sum of its proper divisors (1).

677564213 is an equidigital number, since it uses as much as digits as its factorization.

677564213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 41.

The square root of 677564213 is about 26030.0636380321. The cubic root of 677564213 is about 878.3147036829.

The spelling of 677564213 in words is "six hundred seventy-seven million, five hundred sixty-four thousand, two hundred thirteen".