680430533 has 2 divisors, whose sum is σ = 680430534. Its totient is φ = 680430532.

The previous prime is 680430521. The next prime is 680430719. The reversal of 680430533 is 335034086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 680062084 + 368449 = 26078^2 + 607^2 .

It is a cyclic number.

It is not a de Polignac number, because 680430533 - 2¹² = 680426437 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 680430533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680430733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340215266 + 340215267.

It is an arithmetic number, because the mean of its divisors is an integer number (340215267).

Almost surely, 2^680430533 is an apocalyptic number.

It is an amenable number.

680430533 is a deficient number, since it is larger than the sum of its proper divisors (1).

680430533 is an equidigital number, since it uses as much as digits as its factorization.

680430533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 680430533 is about 26085.0634080119. The cubic root of 680430533 is about 879.5514815791.

The spelling of 680430533 in words is "six hundred eighty million, four hundred thirty thousand, five hundred thirty-three".