680087171 has 2 divisors, whose sum is σ = 680087172. Its totient is φ = 680087170.

The previous prime is 680087141. The next prime is 680087201. The reversal of 680087171 is 171780086.

It is a balanced prime because it is at equal distance from previous prime (680087141) and next prime (680087201).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680087171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (680087101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340043585 + 340043586.

It is an arithmetic number, because the mean of its divisors is an integer number (340043586).

Almost surely, 2^680087171 is an apocalyptic number.

680087171 is a deficient number, since it is larger than the sum of its proper divisors (1).

680087171 is an equidigital number, since it uses as much as digits as its factorization.

680087171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 680087171 is about 26078.4809948739. The cubic root of 680087171 is about 879.4035089084.

The spelling of 680087171 in words is "six hundred eighty million, eighty-seven thousand, one hundred seventy-one".