667306 has 16 divisors (see below), whose sum is σ = 1059840. Its totient is φ = 314640.

The previous prime is 667283. The next prime is 667309. The reversal of 667306 is 603766.

667306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (667309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2800 + ... + 3028.

It is an arithmetic number, because the mean of its divisors is an integer number (66240).

2⁶⁶⁷³⁰⁶ is an apocalyptic number.

667306 is a deficient number, since it is larger than the sum of its proper divisors (392534).

667306 is a wasteful number, since it uses less digits than its factorization.

667306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 667306 is about 816.8879972187. The cubic root of 667306 is about 87.3859630071.

The spelling of 667306 in words is "six hundred sixty-seven thousand, three hundred six".