6490643 has 2 divisors, whose sum is σ = 6490644. Its totient is φ = 6490642.

The previous prime is 6490613. The next prime is 6490661. The reversal of 6490643 is 3460946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6490643 - 2¹² = 6486547 is a prime.

It is not a weakly prime, because it can be changed into another prime (6490613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3245321 + 3245322.

It is an arithmetic number, because the mean of its divisors is an integer number (3245322).

Almost surely, 2^6490643 is an apocalyptic number.

6490643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6490643 is an equidigital number, since it uses as much as digits as its factorization.

6490643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 6490643 is about 2547.6740372347. The cubic root of 6490643 is about 186.5359632794.

The spelling of 6490643 in words is "six million, four hundred ninety thousand, six hundred forty-three".