680242103 has 2 divisors, whose sum is σ = 680242104. Its totient is φ = 680242102.

The previous prime is 680242091. The next prime is 680242141. The reversal of 680242103 is 301242086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 680242103 - 2¹⁸ = 679979959 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680248103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340121051 + 340121052.

It is an arithmetic number, because the mean of its divisors is an integer number (340121052).

Almost surely, 2^680242103 is an apocalyptic number.

680242103 is a deficient number, since it is larger than the sum of its proper divisors (1).

680242103 is an equidigital number, since it uses as much as digits as its factorization.

680242103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 680242103 is about 26081.4513208142. The cubic root of 680242103 is about 879.4702833873.

Adding to 680242103 its reverse (301242086), we get a palindrome (981484189).

The spelling of 680242103 in words is "six hundred eighty million, two hundred forty-two thousand, one hundred three".