6503389 has 2 divisors, whose sum is σ = 6503390. Its totient is φ = 6503388.

The previous prime is 6503381. The next prime is 6503407. The reversal of 6503389 is 9833056.

6503389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6335289 + 168100 = 2517^2 + 410^2 .

It is a cyclic number.

It is not a de Polignac number, because 6503389 - 2³ = 6503381 is a prime.

6503389 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6503381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3251694 + 3251695.

It is an arithmetic number, because the mean of its divisors is an integer number (3251695).

Almost surely, 2^6503389 is an apocalyptic number.

It is an amenable number.

6503389 is a deficient number, since it is larger than the sum of its proper divisors (1).

6503389 is an equidigital number, since it uses as much as digits as its factorization.

6503389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 6503389 is about 2550.1743077680. The cubic root of 6503389 is about 186.6579867704.

The spelling of 6503389 in words is "six million, five hundred three thousand, three hundred eighty-nine".