680148493 has 2 divisors, whose sum is σ = 680148494. Its totient is φ = 680148492.

The previous prime is 680148487. The next prime is 680148503. The reversal of 680148493 is 394841086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 530012484 + 150136009 = 23022^2 + 12253^2 .

It is a cyclic number.

It is not a de Polignac number, because 680148493 - 2²⁵ = 646594061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680148193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340074246 + 340074247.

It is an arithmetic number, because the mean of its divisors is an integer number (340074247).

Almost surely, 2^680148493 is an apocalyptic number.

It is an amenable number.

680148493 is a deficient number, since it is larger than the sum of its proper divisors (1).

680148493 is an equidigital number, since it uses as much as digits as its factorization.

680148493 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 43.

The square root of 680148493 is about 26079.6566886913. The cubic root of 680148493 is about 879.4299394227.

The spelling of 680148493 in words is "six hundred eighty million, one hundred forty-eight thousand, four hundred ninety-three".