647958956 has 12 divisors (see below), whose sum is σ = 1134319368. Its totient is φ = 323867712.

The previous prime is 647958923. The next prime is 647958979. The reversal of 647958956 is 659859746.

647958956 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 = 647958895 and 647958904.

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, 14141 + ... + 38676.

It is an arithmetic number, because the mean of its divisors is an integer number (94526614).

Almost surely, 2^647958956 is an apocalyptic number.

It is an amenable number.

647958956 is a deficient number, since it is larger than the sum of its proper divisors (486360412).

647958956 is a wasteful number, since it uses less digits than its factorization.

647958956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55888 (or 55886 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 59.

The square root of 647958956 is about 25455.0379296516. The cubic root of 647958956 is about 865.3314715236.

The spelling of 647958956 in words is "six hundred forty-seven million, nine hundred fifty-eight thousand, nine hundred fifty-six".