606667 has 4 divisors (see below), whose sum is σ = 609336. Its totient is φ = 604000.

The previous prime is 606659. The next prime is 606673. The reversal of 606667 is 766606.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766606 = 2 ⋅383303.

It is a cyclic number.

It is not a de Polignac number, because 606667 - 2³ = 606659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (606607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958 + ... + 1459.

It is an arithmetic number, because the mean of its divisors is an integer number (152334).

2⁶⁰⁶⁶⁶⁷ is an apocalyptic number.

606667 is a deficient number, since it is larger than the sum of its proper divisors (2669).

606667 is a wasteful number, since it uses less digits than its factorization.

606667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 606667 is about 778.8883103501. Note that the first 3 decimals coincide. The cubic root of 606667 is about 84.6545146205.

The spelling of 606667 in words is "six hundred six thousand, six hundred sixty-seven".