647703698368 has 56 divisors (see below), whose sum is σ = 1313075839680. Its totient is φ = 316922511360.

The previous prime is 647703698353. The next prime is 647703698387. The reversal of 647703698368 is 863896307746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4488 + ... + 1138168.

Almost surely, 2^647703698368 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 647703698368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (656537919840).

647703698368 is an abundant number, since it is smaller than the sum of its proper divisors (665372141312).

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

647703698368 is a wasteful number, since it uses less digits than its factorization.

647703698368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133885 (or 1133875 counting only the distinct ones).

The product of its (nonzero) digits is 219469824, while the sum is 67.

The spelling of 647703698368 in words is "six hundred forty-seven billion, seven hundred three million, six hundred ninety-eight thousand, three hundred sixty-eight".