6320644393 has 8 divisors (see below), whose sum is σ = 7232334912. Its totient is φ = 5411139216.

The previous prime is 6320644321. The next prime is 6320644411. The reversal of 6320644393 is 3934460236.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-6320644393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6320644313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540130 + ... + 551707.

It is an arithmetic number, because the mean of its divisors is an integer number (904041864).

Almost surely, 2^6320644393 is an apocalyptic number.

It is an amenable number.

6320644393 is a deficient number, since it is larger than the sum of its proper divisors (911690519).

6320644393 is a wasteful number, since it uses less digits than its factorization.

6320644393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092671.

The product of its (nonzero) digits is 279936, while the sum is 40.

The square root of 6320644393 is about 79502.4804204246. The cubic root of 6320644393 is about 1848.9299283349.

The spelling of 6320644393 in words is "six billion, three hundred twenty million, six hundred forty-four thousand, three hundred ninety-three".