680036197 has 2 divisors, whose sum is σ = 680036198. Its totient is φ = 680036196.

The previous prime is 680036177. The next prime is 680036213. The reversal of 680036197 is 791630086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399440196 + 280596001 = 19986^2 + 16751^2 .

It is a cyclic number.

It is not a de Polignac number, because 680036197 - 2²³ = 671647589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680036117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340018098 + 340018099.

It is an arithmetic number, because the mean of its divisors is an integer number (340018099).

Almost surely, 2^680036197 is an apocalyptic number.

It is an amenable number.

680036197 is a deficient number, since it is larger than the sum of its proper divisors (1).

680036197 is an equidigital number, since it uses as much as digits as its factorization.

680036197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 680036197 is about 26077.5036573672. The cubic root of 680036197 is about 879.3815372963.

The spelling of 680036197 in words is "six hundred eighty million, thirty-six thousand, one hundred ninety-seven".