6400345724 has 24 divisors (see below), whose sum is σ = 11473645680. Its totient is φ = 3122953856.

The previous prime is 6400345697. The next prime is 6400345727. The reversal of 6400345724 is 4275430046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400345727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66647 + ... + 131310.

It is an arithmetic number, because the mean of its divisors is an integer number (478068570).

Almost surely, 2^6400345724 is an apocalyptic number.

It is an amenable number.

6400345724 is a deficient number, since it is larger than the sum of its proper divisors (5073299956).

6400345724 is a wasteful number, since it uses less digits than its factorization.

6400345724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198157 (or 198155 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The square root of 6400345724 is about 80002.1607458199. The cubic root of 6400345724 is about 1856.6689642735.

The spelling of 6400345724 in words is "six billion, four hundred million, three hundred forty-five thousand, seven hundred twenty-four".