680767504093 has 2 divisors, whose sum is σ = 680767504094. Its totient is φ = 680767504092.

The previous prime is 680767504073. The next prime is 680767504111. The reversal of 680767504093 is 390405767086.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442859637529 + 237907866564 = 665477^2 + 487758^2 .

It is a cyclic number.

It is not a de Polignac number, because 680767504093 - 2²¹ = 680765406941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680767504003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340383752046 + 340383752047.

It is an arithmetic number, because the mean of its divisors is an integer number (340383752047).

Almost surely, 2^680767504093 is an apocalyptic number.

It is an amenable number.

680767504093 is a deficient number, since it is larger than the sum of its proper divisors (1).

680767504093 is an equidigital number, since it uses as much as digits as its factorization.

680767504093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 680767504093 in words is "six hundred eighty billion, seven hundred sixty-seven million, five hundred four thousand, ninety-three".