647424812 has 12 divisors (see below), whose sum is σ = 1157100000. Its totient is φ = 316824816.

The previous prime is 647424803. The next prime is 647424823. The reversal of 647424812 is 218424746.

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, 1721687 + ... + 1722062.

It is an arithmetic number, because the mean of its divisors is an integer number (96425000).

Almost surely, 2^647424812 is an apocalyptic number.

It is an amenable number.

647424812 is a deficient number, since it is larger than the sum of its proper divisors (509675188).

647424812 is a wasteful number, since it uses less digits than its factorization.

647424812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443800 (or 3443798 counting only the distinct ones).

The product of its digits is 86016, while the sum is 38.

The square root of 647424812 is about 25444.5438552158. The cubic root of 647424812 is about 865.0936279198.

The spelling of 647424812 in words is "six hundred forty-seven million, four hundred twenty-four thousand, eight hundred twelve".