680583697 has 2 divisors, whose sum is σ = 680583698. Its totient is φ = 680583696.

The previous prime is 680583689. The next prime is 680583707. The reversal of 680583697 is 796385086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 439992576 + 240591121 = 20976^2 + 15511^2 .

It is a cyclic number.

It is not a de Polignac number, because 680583697 - 2³ = 680583689 is a prime.

It is not a weakly prime, because it can be changed into another prime (680583637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340291848 + 340291849.

It is an arithmetic number, because the mean of its divisors is an integer number (340291849).

Almost surely, 2^680583697 is an apocalyptic number.

It is an amenable number.

680583697 is a deficient number, since it is larger than the sum of its proper divisors (1).

680583697 is an equidigital number, since it uses as much as digits as its factorization.

680583697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 680583697 is about 26087.9990992027. Note that the first 3 decimals coincide. The cubic root of 680583697 is about 879.6174719141.

The spelling of 680583697 in words is "six hundred eighty million, five hundred eighty-three thousand, six hundred ninety-seven".