616589 has 2 divisors, whose sum is σ = 616590. Its totient is φ = 616588.

The previous prime is 616579. The next prime is 616597. The reversal of 616589 is 985616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 574564 + 42025 = 758^2 + 205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616589 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 616589.

It is not a weakly prime, because it can be changed into another prime (616519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308294 + 308295.

It is an arithmetic number, because the mean of its divisors is an integer number (308295).

2⁶¹⁶⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

616589 is a deficient number, since it is larger than the sum of its proper divisors (1).

616589 is an equidigital number, since it uses as much as digits as its factorization.

616589 is an odious number, because the sum of its binary digits is odd.

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

The square root of 616589 is about 785.2318129062. The cubic root of 616589 is about 85.1135276568.

The spelling of 616589 in words is "six hundred sixteen thousand, five hundred eighty-nine".