647208648 has 48 divisors (see below), whose sum is σ = 1754220780. Its totient is φ = 215568384.

The previous prime is 647208643. The next prime is 647208673. The reversal of 647208648 is 846802746.

647208648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 516289284 + 130919364 = 22722^2 + 11442^2 .

It is not an unprimeable number, because it can be changed into a prime (647208641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119536 + ... + 124832.

Almost surely, 2^647208648 is an apocalyptic number.

It is an amenable number.

647208648 is an abundant number, since it is smaller than the sum of its proper divisors (1107012132).

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

647208648 is a wasteful number, since it uses less digits than its factorization.

647208648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7006 (or 6999 counting only the distinct ones).

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

The square root of 647208648 is about 25440.2957529978. The cubic root of 647208648 is about 864.9973372455.

The spelling of 647208648 in words is "six hundred forty-seven million, two hundred eight thousand, six hundred forty-eight".