647061140 has 96 divisors (see below), whose sum is σ = 1620476928. Its totient is φ = 214272000.

The previous prime is 647061031. The next prime is 647061161. The reversal of 647061140 is 41160746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113150 + ... + 118730.

It is an arithmetic number, because the mean of its divisors is an integer number (16879968).

Almost surely, 2^647061140 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 647061140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810238464).

647061140 is an abundant number, since it is smaller than the sum of its proper divisors (973415788).

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

647061140 is a wasteful number, since it uses less digits than its factorization.

647061140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5649 (or 5647 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 647061140 is about 25437.3964862759. The cubic root of 647061140 is about 864.9316172121.

The spelling of 647061140 in words is "six hundred forty-seven million, sixty-one thousand, one hundred forty".