668914 has 16 divisors (see below), whose sum is σ = 1094400. Its totient is φ = 305424.

The previous prime is 668903. The next prime is 668929. The reversal of 668914 is 419866.

668914 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 668914.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799 + ... + 1405.

It is an arithmetic number, because the mean of its divisors is an integer number (68400).

2⁶⁶⁸⁹¹⁴ is an apocalyptic number.

668914 is a deficient number, since it is larger than the sum of its proper divisors (425486).

668914 is a wasteful number, since it uses less digits than its factorization.

668914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657.

The product of its digits is 10368, while the sum is 34.

The square root of 668914 is about 817.8716280689. The cubic root of 668914 is about 87.4560977040.

The spelling of 668914 in words is "six hundred sixty-eight thousand, nine hundred fourteen".