680537101 has 2 divisors, whose sum is σ = 680537102. Its totient is φ = 680537100.

The previous prime is 680537083. The next prime is 680537153. The reversal of 680537101 is 101735086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 562923076 + 117614025 = 23726^2 + 10845^2 .

It is a cyclic number.

It is not a de Polignac number, because 680537101 - 2⁵ = 680537069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680537161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340268550 + 340268551.

It is an arithmetic number, because the mean of its divisors is an integer number (340268551).

Almost surely, 2^680537101 is an apocalyptic number.

It is an amenable number.

680537101 is a deficient number, since it is larger than the sum of its proper divisors (1).

680537101 is an equidigital number, since it uses as much as digits as its factorization.

680537101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 680537101 is about 26087.1060296078. The cubic root of 680537101 is about 879.5973971893.

The spelling of 680537101 in words is "six hundred eighty million, five hundred thirty-seven thousand, one hundred one".