647905322228 has 12 divisors (see below), whose sum is σ = 1134625555140. Its totient is φ = 323726592192.

The previous prime is 647905322227. The next prime is 647905322231. The reversal of 647905322228 is 822223509746.

647905322228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 607186925284 + 40718396944 = 779222^2 + 201788^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647905322227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56510783 + ... + 56522246.

It is an arithmetic number, because the mean of its divisors is an integer number (94552129595).

Almost surely, 2^647905322228 is an apocalyptic number.

It is an amenable number.

647905322228 is a deficient number, since it is larger than the sum of its proper divisors (486720232912).

647905322228 is a wasteful number, since it uses less digits than its factorization.

647905322228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113034466 (or 113034464 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 647905322228 in words is "six hundred forty-seven billion, nine hundred five million, three hundred twenty-two thousand, two hundred twenty-eight".