647120488960 has 160 divisors (see below), whose sum is σ = 1733911147584. Its totient is φ = 229576704000.

The previous prime is 647120488939. The next prime is 647120488981. The reversal of 647120488960 is 69884021746.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (647120488939) and next prime (647120488981).

It is a tau number, because it is divible by the number of its divisors (160).

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 874315 + ... + 1434805.

Almost surely, 2^647120488960 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 647120488960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866955573792).

647120488960 is an abundant number, since it is smaller than the sum of its proper divisors (1086790658624).

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

647120488960 is a wasteful number, since it uses less digits than its factorization.

647120488960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560566 (or 560550 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 647120488960 in words is "six hundred forty-seven billion, one hundred twenty million, four hundred eighty-eight thousand, nine hundred sixty".