647796956 has 12 divisors (see below), whose sum is σ = 1170214080. Its totient is φ = 313450080.

The previous prime is 647796949. The next prime is 647796959. The reversal of 647796956 is 659697746.

It is a happy number.

647796956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 647796895 and 647796904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647796959) 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, 2611961 + ... + 2612208.

It is an arithmetic number, because the mean of its divisors is an integer number (97517840).

Almost surely, 2^647796956 is an apocalyptic number.

It is an amenable number.

647796956 is a deficient number, since it is larger than the sum of its proper divisors (522417124).

647796956 is a wasteful number, since it uses less digits than its factorization.

647796956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224204 (or 5224202 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 59.

The square root of 647796956 is about 25451.8556494414. The cubic root of 647796956 is about 865.2593499890.

The spelling of 647796956 in words is "six hundred forty-seven million, seven hundred ninety-six thousand, nine hundred fifty-six".