647883908 has 48 divisors (see below), whose sum is σ = 1328431104. Its totient is φ = 270711840.

The previous prime is 647883883. The next prime is 647884001. The reversal of 647883908 is 809388746.

It is a happy number.

647883908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 647883908.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408485 + ... + 410067.

It is an arithmetic number, because the mean of its divisors is an integer number (27675648).

Almost surely, 2^647883908 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 647883908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664215552).

647883908 is an abundant number, since it is smaller than the sum of its proper divisors (680547196).

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

647883908 is a wasteful number, since it uses less digits than its factorization.

647883908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 647883908 is about 25453.5637583424. The cubic root of 647883908 is about 865.2980620496.

The spelling of 647883908 in words is "six hundred forty-seven million, eight hundred eighty-three thousand, nine hundred eight".