647228486 has 8 divisors (see below), whose sum is σ = 972016320. Its totient is φ = 323223048.

The previous prime is 647228473. The next prime is 647228497. The reversal of 647228486 is 684822746.

647228486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 647228486.

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, 193526 + ... + 196841.

It is an arithmetic number, because the mean of its divisors is an integer number (121502040).

Almost surely, 2^647228486 is an apocalyptic number.

647228486 is a deficient number, since it is larger than the sum of its proper divisors (324787834).

647228486 is a wasteful number, since it uses less digits than its factorization.

647228486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391198.

The product of its digits is 1032192, while the sum is 47.

The square root of 647228486 is about 25440.6856432762. The cubic root of 647228486 is about 865.0061750147.

The spelling of 647228486 in words is "six hundred forty-seven million, two hundred twenty-eight thousand, four hundred eighty-six".