6400803 has 4 divisors (see below), whose sum is σ = 8534408. Its totient is φ = 4267200.

The previous prime is 6400799. The next prime is 6400813. The reversal of 6400803 is 3080046.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6400803 - 2² = 6400799 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6400803.

It is not an unprimeable number, because it can be changed into a prime (6400813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066798 + ... + 1066803.

It is an arithmetic number, because the mean of its divisors is an integer number (2133602).

Almost surely, 2^6400803 is an apocalyptic number.

6400803 is a deficient number, since it is larger than the sum of its proper divisors (2133605).

6400803 is a wasteful number, since it uses less digits than its factorization.

6400803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133604.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 6400803 is about 2529.9808299669. The cubic root of 6400803 is about 185.6713180111.

Adding to 6400803 its reverse (3080046), we get a palindrome (9480849).

The spelling of 6400803 in words is "six million, four hundred thousand, eight hundred three".