6400306623 has 16 divisors (see below), whose sum is σ = 8911042560. Its totient is φ = 4078482144.

The previous prime is 6400306603. The next prime is 6400306631. The reversal of 6400306623 is 3266030046.

It is not a de Polignac number, because 6400306623 - 2⁶ = 6400306559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400306603) 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, 68338 + ... + 132176.

It is an arithmetic number, because the mean of its divisors is an integer number (556940160).

Almost surely, 2^6400306623 is an apocalyptic number.

6400306623 is a deficient number, since it is larger than the sum of its proper divisors (2510735937).

6400306623 is a wasteful number, since it uses less digits than its factorization.

6400306623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65318.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 6400306623 is about 80001.9163707970. The cubic root of 6400306623 is about 1856.6651833444.

Adding to 6400306623 its reverse (3266030046), we get a palindrome (9666336669).

The spelling of 6400306623 in words is "six billion, four hundred million, three hundred six thousand, six hundred twenty-three".