668930 has 16 divisors (see below), whose sum is σ = 1214784. Its totient is φ = 265200.

The previous prime is 668929. The next prime is 668939. The reversal of 668930 is 39866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (668939) 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 7 ways as a sum of consecutive naturals, for example, 1289 + ... + 1731.

It is an arithmetic number, because the mean of its divisors is an integer number (75924).

2⁶⁶⁸⁹³⁰ is an apocalyptic number.

668930 is a deficient number, since it is larger than the sum of its proper divisors (545854).

668930 is a wasteful number, since it uses less digits than its factorization.

668930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 668930 is about 817.8814094965. The cubic root of 668930 is about 87.4567949966.

The spelling of 668930 in words is "six hundred sixty-eight thousand, nine hundred thirty".