980689 has 2 divisors, whose sum is σ = 980690. Its totient is φ = 980688.

The previous prime is 980687. The next prime is 980711. The reversal of 980689 is 986089.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 966289 + 14400 = 983^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 980689 - 2¹ = 980687 is a prime.

Together with 980687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (980687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490344 + 490345.

It is an arithmetic number, because the mean of its divisors is an integer number (490345).

2⁹⁸⁰⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

980689 is a deficient number, since it is larger than the sum of its proper divisors (1).

980689 is an equidigital number, since it uses as much as digits as its factorization.

980689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 980689 is about 990.2974300684. The cubic root of 980689 is about 99.3521114698.

The spelling of 980689 in words is "nine hundred eighty thousand, six hundred eighty-nine".