648378056 has 32 divisors (see below), whose sum is σ = 1269432000. Its totient is φ = 310072896.

The previous prime is 648378041. The next prime is 648378061. The reversal of 648378056 is 650873846.

648378056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a pancake number, because a pancake can be divided into 648378056 parts by 36010 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 648378056.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11765 + ... + 37883.

It is an arithmetic number, because the mean of its divisors is an integer number (39669750).

Almost surely, 2^648378056 is an apocalyptic number.

It is an amenable number.

648378056 is a deficient number, since it is larger than the sum of its proper divisors (621053944).

648378056 is a wasteful number, since it uses less digits than its factorization.

648378056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26261 (or 26257 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 648378056 is about 25463.2687610998. The cubic root of 648378056 is about 865.5179968453.

The spelling of 648378056 in words is "six hundred forty-eight million, three hundred seventy-eight thousand, fifty-six".