668510848 has 32 divisors (see below), whose sum is σ = 1333673460. Its totient is φ = 333785088.

The previous prime is 668510837. The next prime is 668510861. The reversal of 668510848 is 848015866.

It can be written as a sum of positive squares in 2 ways, for example, as 663165504 + 5345344 = 25752^2 + 2312^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 668510798 and 668510807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98740 + ... + 105292.

Almost surely, 2^668510848 is an apocalyptic number.

It is an amenable number.

668510848 is a deficient number, since it is larger than the sum of its proper divisors (665162612).

668510848 is an equidigital number, since it uses as much as digits as its factorization.

668510848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7364 (or 7352 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The square root of 668510848 is about 25855.5767292087. The cubic root of 668510848 is about 874.3852435060.

The spelling of 668510848 in words is "six hundred sixty-eight million, five hundred ten thousand, eight hundred forty-eight".