647456884 has 12 divisors (see below), whose sum is σ = 1133241984. Its totient is φ = 323673464.

The previous prime is 647456809. The next prime is 647456897. The reversal of 647456884 is 488654746.

647456884 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24699 + ... + 43645.

It is an arithmetic number, because the mean of its divisors is an integer number (94436832).

Almost surely, 2^647456884 is an apocalyptic number.

It is an amenable number.

647456884 is a deficient number, since it is larger than the sum of its proper divisors (485785100).

647456884 is a wasteful number, since it uses less digits than its factorization.

647456884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27494 (or 27492 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 52.

The square root of 647456884 is about 25445.1740807565. The cubic root of 647456884 is about 865.1079126286.

The spelling of 647456884 in words is "six hundred forty-seven million, four hundred fifty-six thousand, eight hundred eighty-four".