647452608 has 252 divisors, whose sum is σ = 2012731560. Its totient is φ = 183321600.

The previous prime is 647452583. The next prime is 647452609. The reversal of 647452608 is 806254746.

647452608 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 647452608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647452609) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20885553 + ... + 20885583.

It is an arithmetic number, because the mean of its divisors is an integer number (7987030).

Almost surely, 2^647452608 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 647452608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006365780).

647452608 is an abundant number, since it is smaller than the sum of its proper divisors (1365278952).

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

647452608 is a wasteful number, since it uses less digits than its factorization.

647452608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 647452608 is about 25445.0900568263. The cubic root of 647452608 is about 865.1060081468.

The spelling of 647452608 in words is "six hundred forty-seven million, four hundred fifty-two thousand, six hundred eight".