6490591 has 2 divisors, whose sum is σ = 6490592. Its totient is φ = 6490590.

The previous prime is 6490567. The next prime is 6490597. The reversal of 6490591 is 1950946.

6490591 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6490591 - 2⁹ = 6490079 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6490597) 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, 3245295 + 3245296.

It is an arithmetic number, because the mean of its divisors is an integer number (3245296).

Almost surely, 2^6490591 is an apocalyptic number.

6490591 is a deficient number, since it is larger than the sum of its proper divisors (1).

6490591 is an equidigital number, since it uses as much as digits as its factorization.

6490591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 6490591 is about 2547.6638318271. The cubic root of 6490591 is about 186.5354651317.

The spelling of 6490591 in words is "six million, four hundred ninety thousand, five hundred ninety-one".