680886251093 has 2 divisors, whose sum is σ = 680886251094. Its totient is φ = 680886251092.

The previous prime is 680886251077. The next prime is 680886251117. The reversal of 680886251093 is 390152688086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628901339089 + 51984912004 = 793033^2 + 228002^2 .

It is a cyclic number.

It is not a de Polignac number, because 680886251093 - 2⁴ = 680886251077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680886251693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340443125546 + 340443125547.

It is an arithmetic number, because the mean of its divisors is an integer number (340443125547).

Almost surely, 2^680886251093 is an apocalyptic number.

It is an amenable number.

680886251093 is a deficient number, since it is larger than the sum of its proper divisors (1).

680886251093 is an equidigital number, since it uses as much as digits as its factorization.

680886251093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 680886251093 in words is "six hundred eighty billion, eight hundred eighty-six million, two hundred fifty-one thousand, ninety-three".