6499903 has 2 divisors, whose sum is σ = 6499904. Its totient is φ = 6499902.

The previous prime is 6499897. The next prime is 6499939. The reversal of 6499903 is 3099946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6499903 - 2⁹ = 6499391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6499943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3249951 + 3249952.

It is an arithmetic number, because the mean of its divisors is an integer number (3249952).

Almost surely, 2^6499903 is an apocalyptic number.

6499903 is a deficient number, since it is larger than the sum of its proper divisors (1).

6499903 is an equidigital number, since it uses as much as digits as its factorization.

6499903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 6499903 is about 2549.4907334603. The cubic root of 6499903 is about 186.6246294937.

The spelling of 6499903 in words is "six million, four hundred ninety-nine thousand, nine hundred three".