640303076713 has 8 divisors (see below), whose sum is σ = 649979865920. Its totient is φ = 630629817840.

The previous prime is 640303076659. The next prime is 640303076771. The reversal of 640303076713 is 317670303046.

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

It is a cyclic number.

It is not a de Polignac number, because 640303076713 - 2³⁷ = 502864123241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (640303076213) 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, 515958 + ... + 1243711.

It is an arithmetic number, because the mean of its divisors is an integer number (81247483240).

Almost surely, 2^640303076713 is an apocalyptic number.

It is an amenable number.

640303076713 is a deficient number, since it is larger than the sum of its proper divisors (9676789207).

640303076713 is a wasteful number, since it uses less digits than its factorization.

640303076713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765167.

The product of its (nonzero) digits is 190512, while the sum is 40.

Adding to 640303076713 its reverse (317670303046), we get a palindrome (957973379759).

The spelling of 640303076713 in words is "six hundred forty billion, three hundred three million, seventy-six thousand, seven hundred thirteen".