689803 has 2 divisors, whose sum is σ = 689804. Its totient is φ = 689802.

The previous prime is 689797. The next prime is 689807. The reversal of 689803 is 308986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 689803 - 2⁵ = 689771 is a prime.

689803 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (689807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344901 + 344902.

It is an arithmetic number, because the mean of its divisors is an integer number (344902).

2⁶⁸⁹⁸⁰³ is an apocalyptic number.

689803 is a deficient number, since it is larger than the sum of its proper divisors (1).

689803 is an equidigital number, since it uses as much as digits as its factorization.

689803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 689803 is about 830.5437977614. The cubic root of 689803 is about 88.3571487544.

The spelling of 689803 in words is "six hundred eighty-nine thousand, eight hundred three".