677728589 has 2 divisors, whose sum is σ = 677728590. Its totient is φ = 677728588.

The previous prime is 677728577. The next prime is 677728643. The reversal of 677728589 is 985827776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 661261225 + 16467364 = 25715^2 + 4058^2 .

It is a cyclic number.

It is not a de Polignac number, because 677728589 - 2¹² = 677724493 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 (677728549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338864294 + 338864295.

It is an arithmetic number, because the mean of its divisors is an integer number (338864295).

Almost surely, 2^677728589 is an apocalyptic number.

It is an amenable number.

677728589 is a deficient number, since it is larger than the sum of its proper divisors (1).

677728589 is an equidigital number, since it uses as much as digits as its factorization.

677728589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11854080, while the sum is 59.

The square root of 677728589 is about 26033.2208725697. The cubic root of 677728589 is about 878.3857238566.

The spelling of 677728589 in words is "six hundred seventy-seven million, seven hundred twenty-eight thousand, five hundred eighty-nine".