647883388747 has 8 divisors (see below), whose sum is σ = 772631122176. Its totient is φ = 531183896232.

The previous prime is 647883388667. The next prime is 647883388771. The reversal of 647883388747 is 747883388746.

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 647883388747 - 2³¹ = 645735905099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 647883388747.

It is not an unprimeable number, because it can be changed into a prime (647883388147) 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, 2012060053 + ... + 2012060374.

It is an arithmetic number, because the mean of its divisors is an integer number (96578890272).

Almost surely, 2^647883388747 is an apocalyptic number.

647883388747 is a deficient number, since it is larger than the sum of its proper divisors (124747733429).

647883388747 is a wasteful number, since it uses less digits than its factorization.

647883388747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024120457.

The product of its digits is 1213857792, while the sum is 73.

Subtracting 647883388747 from its reverse (747883388746), we obtain a palindrome (99999999999).

The spelling of 647883388747 in words is "six hundred forty-seven billion, eight hundred eighty-three million, three hundred eighty-eight thousand, seven hundred forty-seven".