680397343 has 2 divisors, whose sum is σ = 680397344. Its totient is φ = 680397342.

The previous prime is 680397317. The next prime is 680397349. The reversal of 680397343 is 343793086.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680397343 is a prime.

It is a super-2 number, since 2×680397343² = 925881088722919298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 680397343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680397349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340198671 + 340198672.

It is an arithmetic number, because the mean of its divisors is an integer number (340198672).

Almost surely, 2^680397343 is an apocalyptic number.

680397343 is a deficient number, since it is larger than the sum of its proper divisors (1).

680397343 is an equidigital number, since it uses as much as digits as its factorization.

680397343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 680397343 is about 26084.4272124193. The cubic root of 680397343 is about 879.5371804434.

The spelling of 680397343 in words is "six hundred eighty million, three hundred ninety-seven thousand, three hundred forty-three".