668963468 has 12 divisors (see below), whose sum is σ = 1185505440. Its totient is φ = 330247632.

The previous prime is 668963467. The next prime is 668963497. The reversal of 668963468 is 864369866.

It is not an unprimeable number, because it can be changed into a prime (668963467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058171 + ... + 1058802.

It is an arithmetic number, because the mean of its divisors is an integer number (98792120).

Almost surely, 2^668963468 is an apocalyptic number.

It is an amenable number.

668963468 is a deficient number, since it is larger than the sum of its proper divisors (516541972).

668963468 is a wasteful number, since it uses less digits than its factorization.

668963468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117056 (or 2117054 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 56.

The square root of 668963468 is about 25864.3280987541. The cubic root of 668963468 is about 874.5825352255.

The spelling of 668963468 in words is "six hundred sixty-eight million, nine hundred sixty-three thousand, four hundred sixty-eight".