668104 has 16 divisors (see below), whose sum is σ = 1307520. Its totient is φ = 319440.

The previous prime is 668093. The next prime is 668111. The reversal of 668104 is 401866.

It is a plaindrome in base 14.

It is an unprimeable number.

668104 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1632 + ... + 1999.

It is an arithmetic number, because the mean of its divisors is an integer number (81720).

2⁶⁶⁸¹⁰⁴ is an apocalyptic number.

It is an amenable number.

668104 is a deficient number, since it is larger than the sum of its proper divisors (639416).

668104 is a wasteful number, since it uses less digits than its factorization.

668104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660 (or 3656 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 668104 is about 817.3762903339. The cubic root of 668104 is about 87.4207827248.

The spelling of 668104 in words is "six hundred sixty-eight thousand, one hundred four".