668026448 has 40 divisors (see below), whose sum is σ = 1345747200. Its totient is φ = 320981760.

The previous prime is 668026439. The next prime is 668026459. The reversal of 668026448 is 844620866.

It is a junction number, because it is equal to n+sod(n) for n = 668026399 and 668026408.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 36353 + ... + 51551.

It is an arithmetic number, because the mean of its divisors is an integer number (33643680).

Almost surely, 2^668026448 is an apocalyptic number.

It is an amenable number.

668026448 is an abundant number, since it is smaller than the sum of its proper divisors (677720752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668026448 is a wasteful number, since it uses less digits than its factorization.

668026448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15315 (or 15309 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The square root of 668026448 is about 25846.2076134972. The cubic root of 668026448 is about 874.1740005841.

The spelling of 668026448 in words is "six hundred sixty-eight million, twenty-six thousand, four hundred forty-eight".