647028858560 has 112 divisors (see below), whose sum is σ = 1765919418624. Its totient is φ = 221198896128.

The previous prime is 647028858503. The next prime is 647028858583. The reversal of 647028858560 is 65858820746.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 647028858560.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361067 + ... + 1193493.

Almost surely, 2^647028858560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647028858560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (882959709312).

647028858560 is an abundant number, since it is smaller than the sum of its proper divisors (1118890560064).

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

647028858560 is a wasteful number, since it uses less digits than its factorization.

647028858560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832798 (or 832788 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 59.

The spelling of 647028858560 in words is "six hundred forty-seven billion, twenty-eight million, eight hundred fifty-eight thousand, five hundred sixty".