680230189 has 2 divisors, whose sum is σ = 680230190. Its totient is φ = 680230188.

The previous prime is 680230151. The next prime is 680230193. The reversal of 680230189 is 981032086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 668636164 + 11594025 = 25858^2 + 3405^2 .

It is a cyclic number.

It is not a de Polignac number, because 680230189 - 2²⁷ = 546012461 is a prime.

It is a super-2 number, since 2×680230189² = 925426220053951442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680210189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340115094 + 340115095.

It is an arithmetic number, because the mean of its divisors is an integer number (340115095).

Almost surely, 2^680230189 is an apocalyptic number.

It is an amenable number.

680230189 is a deficient number, since it is larger than the sum of its proper divisors (1).

680230189 is an equidigital number, since it uses as much as digits as its factorization.

680230189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 680230189 is about 26081.2229199476. Note that the first 3 decimals coincide. The cubic root of 680230189 is about 879.4651489065.

The spelling of 680230189 in words is "six hundred eighty million, two hundred thirty thousand, one hundred eighty-nine".