647888409056 has 48 divisors (see below), whose sum is σ = 1457816494176. Its totient is φ = 277653590016.

The previous prime is 647888409019. The next prime is 647888409059. The reversal of 647888409056 is 650904888746.

It is a super-2 number, since 2×647888409056² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 647888408983 and 647888409001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647888409059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5998280 + ... + 6105336.

It is an arithmetic number, because the mean of its divisors is an integer number (30371176962).

Almost surely, 2^647888409056 is an apocalyptic number.

It is an amenable number.

647888409056 is an abundant number, since it is smaller than the sum of its proper divisors (809928085120).

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

647888409056 is a wasteful number, since it uses less digits than its factorization.

647888409056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134091 (or 134083 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 65.

The spelling of 647888409056 in words is "six hundred forty-seven billion, eight hundred eighty-eight million, four hundred nine thousand, fifty-six".