647470798 has 8 divisors (see below), whose sum is σ = 1045914408. Its totient is φ = 298832664.

The previous prime is 647470783. The next prime is 647470801. The reversal of 647470798 is 897074746.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 12451336 + ... + 12451387.

It is an arithmetic number, because the mean of its divisors is an integer number (130739301).

Almost surely, 2^647470798 is an apocalyptic number.

647470798 is a deficient number, since it is larger than the sum of its proper divisors (398443610).

647470798 is a wasteful number, since it uses less digits than its factorization.

647470798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24902738.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The square root of 647470798 is about 25445.4474906613. The cubic root of 647470798 is about 865.1141097081.

The spelling of 647470798 in words is "six hundred forty-seven million, four hundred seventy thousand, seven hundred ninety-eight".