680344459 has 2 divisors, whose sum is σ = 680344460. Its totient is φ = 680344458.

The previous prime is 680344433. The next prime is 680344463. The reversal of 680344459 is 954443086.

It is a happy number.

680344459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680344459 - 2²⁷ = 546126731 is a prime.

It is not a weakly prime, because it can be changed into another prime (680344499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340172229 + 340172230.

It is an arithmetic number, because the mean of its divisors is an integer number (340172230).

Almost surely, 2^680344459 is an apocalyptic number.

680344459 is a deficient number, since it is larger than the sum of its proper divisors (1).

680344459 is an equidigital number, since it uses as much as digits as its factorization.

680344459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 680344459 is about 26083.4134844349. The cubic root of 680344459 is about 879.5143924603.

The spelling of 680344459 in words is "six hundred eighty million, three hundred forty-four thousand, four hundred fifty-nine".