647882064 has 200 divisors, whose sum is σ = 2003934240. Its totient is φ = 201491712.

The previous prime is 647882063. The next prime is 647882071. The reversal of 647882064 is 460288746.

647882064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647882063) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2043634 + ... + 2043950.

Almost surely, 2^647882064 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 647882064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1001967120).

647882064 is an abundant number, since it is smaller than the sum of its proper divisors (1356052176).

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

647882064 is a wasteful number, since it uses less digits than its factorization.

647882064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 647882064 is about 25453.5275354910. The cubic root of 647882064 is about 865.2972411149.

The spelling of 647882064 in words is "six hundred forty-seven million, eight hundred eighty-two thousand, sixty-four".