680282689 has 2 divisors, whose sum is σ = 680282690. Its totient is φ = 680282688.

The previous prime is 680282671. The next prime is 680282711. The reversal of 680282689 is 986282086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 629759025 + 50523664 = 25095^2 + 7108^2 .

It is a cyclic number.

It is not a de Polignac number, because 680282689 - 2⁵ = 680282657 is a prime.

It is not a weakly prime, because it can be changed into another prime (680282389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340141344 + 340141345.

It is an arithmetic number, because the mean of its divisors is an integer number (340141345).

Almost surely, 2^680282689 is an apocalyptic number.

It is an amenable number.

680282689 is a deficient number, since it is larger than the sum of its proper divisors (1).

680282689 is an equidigital number, since it uses as much as digits as its factorization.

680282689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 680282689 is about 26082.2293717389. The cubic root of 680282689 is about 879.4877739596.

The spelling of 680282689 in words is "six hundred eighty million, two hundred eighty-two thousand, six hundred eighty-nine".