647115848 has 16 divisors (see below), whose sum is σ = 1218380460. Its totient is φ = 322214400.

The previous prime is 647115841. The next prime is 647115853. The reversal of 647115848 is 848511746.

It can be written as a sum of positive squares in 2 ways, for example, as 503643364 + 143472484 = 22442^2 + 11978^2 .

It is a junction number, because it is equal to n+sod(n) for n = 647115799 and 647115808.

It is not an unprimeable number, because it can be changed into a prime (647115841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165893 + ... + 169748.

Almost surely, 2^647115848 is an apocalyptic number.

It is an amenable number.

647115848 is a deficient number, since it is larger than the sum of its proper divisors (571264612).

647115848 is a wasteful number, since it uses less digits than its factorization.

647115848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335888 (or 335884 counting only the distinct ones).

The product of its digits is 215040, while the sum is 44.

The square root of 647115848 is about 25438.4718094464. The cubic root of 647115848 is about 864.9559927270.

The spelling of 647115848 in words is "six hundred forty-seven million, one hundred fifteen thousand, eight hundred forty-eight".