647716360 has 64 divisors (see below), whose sum is σ = 1502686080. Its totient is φ = 251112960.

The previous prime is 647716309. The next prime is 647716369. The reversal of 647716360 is 63617746.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (647716369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266109 + ... + 268531.

It is an arithmetic number, because the mean of its divisors is an integer number (23479470).

Almost surely, 2^647716360 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 647716360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (751343040).

647716360 is an abundant number, since it is smaller than the sum of its proper divisors (854969720).

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

647716360 is a wasteful number, since it uses less digits than its factorization.

647716360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638 (or 2634 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 647716360 is about 25450.2722971681. The cubic root of 647716360 is about 865.2234646012.

The spelling of 647716360 in words is "six hundred forty-seven million, seven hundred sixteen thousand, three hundred sixty".