689411 has 2 divisors, whose sum is σ = 689412. Its totient is φ = 689410.

The previous prime is 689393. The next prime is 689431. The reversal of 689411 is 114986.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-689411 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 689411.

It is not a weakly prime, because it can be changed into another prime (689431) 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, 344705 + 344706.

It is an arithmetic number, because the mean of its divisors is an integer number (344706).

2⁶⁸⁹⁴¹¹ is an apocalyptic number.

689411 is a deficient number, since it is larger than the sum of its proper divisors (1).

689411 is an equidigital number, since it uses as much as digits as its factorization.

689411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The square root of 689411 is about 830.3077742621. The cubic root of 689411 is about 88.3404084361.

The spelling of 689411 in words is "six hundred eighty-nine thousand, four hundred eleven".