680297353 has 2 divisors, whose sum is σ = 680297354. Its totient is φ = 680297352.

The previous prime is 680297351. The next prime is 680297357. The reversal of 680297353 is 353792086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 638926729 + 41370624 = 25277^2 + 6432^2 .

It is a cyclic number.

It is not a de Polignac number, because 680297353 - 2¹ = 680297351 is a prime.

Together with 680297351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (680297351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340148676 + 340148677.

It is an arithmetic number, because the mean of its divisors is an integer number (340148677).

Almost surely, 2^680297353 is an apocalyptic number.

It is an amenable number.

680297353 is a deficient number, since it is larger than the sum of its proper divisors (1).

680297353 is an equidigital number, since it uses as much as digits as its factorization.

680297353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 680297353 is about 26082.5104811634. The cubic root of 680297353 is about 879.4940932522.

The spelling of 680297353 in words is "six hundred eighty million, two hundred ninety-seven thousand, three hundred fifty-three".