680101061 has 2 divisors, whose sum is σ = 680101062. Its totient is φ = 680101060.

The previous prime is 680101057. The next prime is 680101063. The reversal of 680101061 is 160101086.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 674388961 + 5712100 = 25969^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 680101061 - 2² = 680101057 is a prime.

Together with 680101063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680101063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340050530 + 340050531.

It is an arithmetic number, because the mean of its divisors is an integer number (340050531).

Almost surely, 2^680101061 is an apocalyptic number.

It is an amenable number.

680101061 is a deficient number, since it is larger than the sum of its proper divisors (1).

680101061 is an equidigital number, since it uses as much as digits as its factorization.

680101061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 680101061 is about 26078.7473050375. The cubic root of 680101061 is about 879.4094958034.

The spelling of 680101061 in words is "six hundred eighty million, one hundred one thousand, sixty-one".