647796904 has 16 divisors (see below), whose sum is σ = 1216362420. Its totient is φ = 323433600.

The previous prime is 647796893. The next prime is 647796949. The reversal of 647796904 is 409697746.

It can be written as a sum of positive squares in 2 ways, for example, as 552344004 + 95452900 = 23502^2 + 9770^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52149 + ... + 63364.

Almost surely, 2^647796904 is an apocalyptic number.

It is an amenable number.

647796904 is a deficient number, since it is larger than the sum of its proper divisors (568565516).

647796904 is a wasteful number, since it uses less digits than its factorization.

647796904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116220 (or 116216 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 52.

The square root of 647796904 is about 25451.8546279048. The cubic root of 647796904 is about 865.2593268370.

The spelling of 647796904 in words is "six hundred forty-seven million, seven hundred ninety-six thousand, nine hundred four".