680342459 has 2 divisors, whose sum is σ = 680342460. Its totient is φ = 680342458.

The previous prime is 680342423. The next prime is 680342477. The reversal of 680342459 is 954243086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680342459 - 2¹² = 680338363 is a prime.

It is not a weakly prime, because it can be changed into another prime (680344459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340171229 + 340171230.

It is an arithmetic number, because the mean of its divisors is an integer number (340171230).

Almost surely, 2^680342459 is an apocalyptic number.

680342459 is a deficient number, since it is larger than the sum of its proper divisors (1).

680342459 is an equidigital number, since it uses as much as digits as its factorization.

680342459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 680342459 is about 26083.3751458664. The cubic root of 680342459 is about 879.5135306270.

The spelling of 680342459 in words is "six hundred eighty million, three hundred forty-two thousand, four hundred fifty-nine".