668048 has 20 divisors (see below), whose sum is σ = 1325808. Its totient is φ = 325920.

The previous prime is 668047. The next prime is 668051. The reversal of 668048 is 840866.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (668047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203 + ... + 1173.

2⁶⁶⁸⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

668048 is a deficient number, since it is larger than the sum of its proper divisors (657760).

668048 is a wasteful number, since it uses less digits than its factorization.

668048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 668048 is about 817.3420336677. The cubic root of 668048 is about 87.4183401407.

The spelling of 668048 in words is "six hundred sixty-eight thousand, forty-eight".