680064863 has 2 divisors, whose sum is σ = 680064864. Its totient is φ = 680064862.

The previous prime is 680064841. The next prime is 680064881. The reversal of 680064863 is 368460086.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680064863 - 2¹² = 680060767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 680064863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680064893) 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, 340032431 + 340032432.

It is an arithmetic number, because the mean of its divisors is an integer number (340032432).

Almost surely, 2^680064863 is an apocalyptic number.

680064863 is a deficient number, since it is larger than the sum of its proper divisors (1).

680064863 is an equidigital number, since it uses as much as digits as its factorization.

680064863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 680064863 is about 26078.0532824059. The cubic root of 680064863 is about 879.3938934998.

The spelling of 680064863 in words is "six hundred eighty million, sixty-four thousand, eight hundred sixty-three".