680303077 has 2 divisors, whose sum is σ = 680303078. Its totient is φ = 680303076.

The previous prime is 680303069. The next prime is 680303087. The reversal of 680303077 is 770303086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 591170596 + 89132481 = 24314^2 + 9441^2 .

It is a cyclic number.

It is not a de Polignac number, because 680303077 - 2³ = 680303069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680303017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340151538 + 340151539.

It is an arithmetic number, because the mean of its divisors is an integer number (340151539).

Almost surely, 2^680303077 is an apocalyptic number.

It is an amenable number.

680303077 is a deficient number, since it is larger than the sum of its proper divisors (1).

680303077 is an equidigital number, since it uses as much as digits as its factorization.

680303077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 680303077 is about 26082.6202096338. The cubic root of 680303077 is about 879.4965599236.

Subtracting 680303077 from its reverse (770303086), we obtain a palindrome (90000009).

The spelling of 680303077 in words is "six hundred eighty million, three hundred three thousand, seventy-seven".