680071747 has 2 divisors, whose sum is σ = 680071748. Its totient is φ = 680071746.

The previous prime is 680071741. The next prime is 680071759. The reversal of 680071747 is 747170086.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680071747 is a prime.

It is not a weakly prime, because it can be changed into another prime (680071741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340035873 + 340035874.

It is an arithmetic number, because the mean of its divisors is an integer number (340035874).

Almost surely, 2^680071747 is an apocalyptic number.

680071747 is a deficient number, since it is larger than the sum of its proper divisors (1).

680071747 is an equidigital number, since it uses as much as digits as its factorization.

680071747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 680071747 is about 26078.1852704516. The cubic root of 680071747 is about 879.3968607301.

The spelling of 680071747 in words is "six hundred eighty million, seventy-one thousand, seven hundred forty-seven".