345680768677 has 2 divisors, whose sum is σ = 345680768678. Its totient is φ = 345680768676.

The previous prime is 345680768669. The next prime is 345680768791. The reversal of 345680768677 is 776867086543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240309765796 + 105371002881 = 490214^2 + 324609^2 .

It is a cyclic number.

It is not a de Polignac number, because 345680768677 - 2³ = 345680768669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345680768077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172840384338 + 172840384339.

It is an arithmetic number, because the mean of its divisors is an integer number (172840384339).

Almost surely, 2^345680768677 is an apocalyptic number.

It is an amenable number.

345680768677 is a deficient number, since it is larger than the sum of its proper divisors (1).

345680768677 is an equidigital number, since it uses as much as digits as its factorization.

345680768677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 284497920, while the sum is 67.

The spelling of 345680768677 in words is "three hundred forty-five billion, six hundred eighty million, seven hundred sixty-eight thousand, six hundred seventy-seven".