680752489 has 2 divisors, whose sum is σ = 680752490. Its totient is φ = 680752488.

The previous prime is 680752487. The next prime is 680752517. The reversal of 680752489 is 984257086.

680752489 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., 525326400 + 155426089 = 22920^2 + 12467^2 .

It is a cyclic number.

It is not a de Polignac number, because 680752489 - 2¹ = 680752487 is a prime.

Together with 680752487, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (680752483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340376244 + 340376245.

It is an arithmetic number, because the mean of its divisors is an integer number (340376245).

Almost surely, 2^680752489 is an apocalyptic number.

It is an amenable number.

680752489 is a deficient number, since it is larger than the sum of its proper divisors (1).

680752489 is an equidigital number, since it uses as much as digits as its factorization.

680752489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 680752489 is about 26091.2339493555. The cubic root of 680752489 is about 879.6901840681.

The spelling of 680752489 in words is "six hundred eighty million, seven hundred fifty-two thousand, four hundred eighty-nine".