516689 has 2 divisors, whose sum is σ = 516690. Its totient is φ = 516688.

The previous prime is 516679. The next prime is 516701. The reversal of 516689 is 986615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 462400 + 54289 = 680^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 516689 - 2⁴ = 516673 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258344 + 258345.

It is an arithmetic number, because the mean of its divisors is an integer number (258345).

2⁵¹⁶⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

516689 is a deficient number, since it is larger than the sum of its proper divisors (1).

516689 is an equidigital number, since it uses as much as digits as its factorization.

516689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 516689 is about 718.8108235134. The cubic root of 516689 is about 80.2434769852.

The spelling of 516689 in words is "five hundred sixteen thousand, six hundred eighty-nine".