689880211 has 2 divisors, whose sum is σ = 689880212. Its totient is φ = 689880210.

The previous prime is 689880187. The next prime is 689880223. The reversal of 689880211 is 112088986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 689880211 - 2⁹ = 689879699 is a prime.

It is not a weakly prime, because it can be changed into another prime (689880311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344940105 + 344940106.

It is an arithmetic number, because the mean of its divisors is an integer number (344940106).

Almost surely, 2^689880211 is an apocalyptic number.

689880211 is a deficient number, since it is larger than the sum of its proper divisors (1).

689880211 is an equidigital number, since it uses as much as digits as its factorization.

689880211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 43.

The square root of 689880211 is about 26265.5708295099. The cubic root of 689880211 is about 883.6044529428.

The spelling of 689880211 in words is "six hundred eighty-nine million, eight hundred eighty thousand, two hundred eleven".