680817433 has 2 divisors, whose sum is σ = 680817434. Its totient is φ = 680817432.

The previous prime is 680817373. The next prime is 680817451. The reversal of 680817433 is 334718086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445716544 + 235100889 = 21112^2 + 15333^2 .

It is a cyclic number.

It is not a de Polignac number, because 680817433 - 2⁹ = 680816921 is a prime.

It is not a weakly prime, because it can be changed into another prime (680817463) 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, 340408716 + 340408717.

It is an arithmetic number, because the mean of its divisors is an integer number (340408717).

Almost surely, 2^680817433 is an apocalyptic number.

It is an amenable number.

680817433 is a deficient number, since it is larger than the sum of its proper divisors (1).

680817433 is an equidigital number, since it uses as much as digits as its factorization.

680817433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 680817433 is about 26092.4784756067. The cubic root of 680817433 is about 879.7181574179.

The spelling of 680817433 in words is "six hundred eighty million, eight hundred seventeen thousand, four hundred thirty-three".