620289589 has 2 divisors, whose sum is σ = 620289590. Its totient is φ = 620289588.

The previous prime is 620289569. The next prime is 620289601. The reversal of 620289589 is 985982026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 515063025 + 105226564 = 22695^2 + 10258^2 .

It is a cyclic number.

It is not a de Polignac number, because 620289589 - 2²⁵ = 586735157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620289559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310144794 + 310144795.

It is an arithmetic number, because the mean of its divisors is an integer number (310144795).

Almost surely, 2^620289589 is an apocalyptic number.

It is an amenable number.

620289589 is a deficient number, since it is larger than the sum of its proper divisors (1).

620289589 is an equidigital number, since it uses as much as digits as its factorization.

620289589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 620289589 is about 24905.6136041656. The cubic root of 620289589 is about 852.8346373896.

It can be divided in two parts, 62028 and 9589, that added together give a palindrome (71617).

The spelling of 620289589 in words is "six hundred twenty million, two hundred eighty-nine thousand, five hundred eighty-nine".