656781248 has 28 divisors (see below), whose sum is σ = 1304144712. Its totient is φ = 328177920.

The previous prime is 656781217. The next prime is 656781253. The reversal of 656781248 is 842187656.

656781248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 153863 + ... + 158073.

Almost surely, 2^656781248 is an apocalyptic number.

It is an amenable number.

656781248 is a deficient number, since it is larger than the sum of its proper divisors (647363464).

656781248 is a wasteful number, since it uses less digits than its factorization.

656781248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660 (or 6650 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 656781248 is about 25627.7437165272. The cubic root of 656781248 is about 869.2410909526.

The spelling of 656781248 in words is "six hundred fifty-six million, seven hundred eighty-one thousand, two hundred forty-eight".