647481460 has 24 divisors (see below), whose sum is σ = 1369499040. Its totient is φ = 257128224.

The previous prime is 647481421. The next prime is 647481479. The reversal of 647481460 is 64184746.

647481460 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 7 ways as a sum of consecutive naturals, for example, 113674 + ... + 119233.

It is an arithmetic number, because the mean of its divisors is an integer number (57062460).

Almost surely, 2^647481460 is an apocalyptic number.

It is an amenable number.

647481460 is an abundant number, since it is smaller than the sum of its proper divisors (722017580).

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

647481460 is a wasteful number, since it uses less digits than its factorization.

647481460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233055 (or 233053 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 647481460 is about 25445.6569968236. The cubic root of 647481460 is about 865.1188583372.

The spelling of 647481460 in words is "six hundred forty-seven million, four hundred eighty-one thousand, four hundred sixty".