647713266664 has 96 divisors (see below), whose sum is σ = 1338441408000. Its totient is φ = 293485040640.

The previous prime is 647713266659. The next prime is 647713266709. The reversal of 647713266664 is 466662317746.

It is a junction number, because it is equal to n+sod(n) for n = 647713266599 and 647713266608.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14240022 + ... + 14285434.

It is an arithmetic number, because the mean of its divisors is an integer number (13942098000).

Almost surely, 2^647713266664 is an apocalyptic number.

It is an amenable number.

647713266664 is an abundant number, since it is smaller than the sum of its proper divisors (690728141336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647713266664 is a wasteful number, since it uses less digits than its factorization.

647713266664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45683 (or 45662 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 58.

The spelling of 647713266664 in words is "six hundred forty-seven billion, seven hundred thirteen million, two hundred sixty-six thousand, six hundred sixty-four".