680354317 has 2 divisors, whose sum is σ = 680354318. Its totient is φ = 680354316.

The previous prime is 680354293. The next prime is 680354321. The reversal of 680354317 is 713453086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440538121 + 239816196 = 20989^2 + 15486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680354317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680354617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340177158 + 340177159.

It is an arithmetic number, because the mean of its divisors is an integer number (340177159).

Almost surely, 2^680354317 is an apocalyptic number.

It is an amenable number.

680354317 is a deficient number, since it is larger than the sum of its proper divisors (1).

680354317 is an equidigital number, since it uses as much as digits as its factorization.

680354317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 680354317 is about 26083.6024544157. The cubic root of 680354317 is about 879.5186404119.

The spelling of 680354317 in words is "six hundred eighty million, three hundred fifty-four thousand, three hundred seventeen".