647953848 has 24 divisors (see below), whose sum is σ = 1754875200. Its totient is φ = 215984592.

The previous prime is 647953841. The next prime is 647953849. The reversal of 647953848 is 848359746.

647953848 is a `hidden beast` number, since 64 + 7 + 9 + 538 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 647953794 and 647953803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647953841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4499608 + ... + 4499751.

It is an arithmetic number, because the mean of its divisors is an integer number (73119800).

Almost surely, 2^647953848 is an apocalyptic number.

It is an amenable number.

647953848 is an abundant number, since it is smaller than the sum of its proper divisors (1106921352).

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

647953848 is a wasteful number, since it uses less digits than its factorization.

647953848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8999371 (or 8999364 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 647953848 is about 25454.9375956807. The cubic root of 647953848 is about 865.3291976528.

The spelling of 647953848 in words is "six hundred forty-seven million, nine hundred fifty-three thousand, eight hundred forty-eight".