689219 has 2 divisors, whose sum is σ = 689220. Its totient is φ = 689218.

The previous prime is 689201. The next prime is 689233. The reversal of 689219 is 912986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 689219 - 2¹² = 685123 is a prime.

It is a super-2 number, since 2×689219² = 950045659922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (689279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344609 + 344610.

It is an arithmetic number, because the mean of its divisors is an integer number (344610).

2⁶⁸⁹²¹⁹ is an apocalyptic number.

689219 is a deficient number, since it is larger than the sum of its proper divisors (1).

689219 is an equidigital number, since it uses as much as digits as its factorization.

689219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 689219 is about 830.1921464336. The cubic root of 689219 is about 88.3322067812.

The spelling of 689219 in words is "six hundred eighty-nine thousand, two hundred nineteen".