647937360 has 160 divisors (see below), whose sum is σ = 2550670080. Its totient is φ = 148096512.

The previous prime is 647937359. The next prime is 647937361. The reversal of 647937360 is 63739746.

It is an interprime number because it is at equal distance from previous prime (647937359) and next prime (647937361).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647937361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6307 + ... + 36546.

It is an arithmetic number, because the mean of its divisors is an integer number (15941688).

Almost surely, 2^647937360 is an apocalyptic number.

647937360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647937360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1275335040).

647937360 is an abundant number, since it is smaller than the sum of its proper divisors (1902732720).

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

647937360 is a wasteful number, since it uses less digits than its factorization.

647937360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42882 (or 42870 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The square root of 647937360 is about 25454.6137271812. The cubic root of 647937360 is about 865.3218577942.

The spelling of 647937360 in words is "six hundred forty-seven million, nine hundred thirty-seven thousand, three hundred sixty".