6400303 has 16 divisors (see below), whose sum is σ = 8013376. Its totient is φ = 4976640.

The previous prime is 6400259. The next prime is 6400349. The reversal of 6400303 is 3030046.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6400303 - 2¹⁷ = 6269231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4975 + ... + 6127.

It is an arithmetic number, because the mean of its divisors is an integer number (500836).

Almost surely, 2^6400303 is an apocalyptic number.

6400303 is a deficient number, since it is larger than the sum of its proper divisors (1613073).

6400303 is a wasteful number, since it uses less digits than its factorization.

6400303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 6400303 is about 2529.8820130591. The cubic root of 6400303 is about 185.6664833012. Note that the first 3 decimals are identical.

Adding to 6400303 its reverse (3030046), we get a palindrome (9430349).

The spelling of 6400303 in words is "six million, four hundred thousand, three hundred three".