660207 has 12 divisors (see below), whose sum is σ = 913560. Its totient is φ = 424080.

The previous prime is 660199. The next prime is 660217. The reversal of 660207 is 702066.

It is not a de Polignac number, because 660207 - 2³ = 660199 is a prime.

660207 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2769 + ... + 2997.

It is an arithmetic number, because the mean of its divisors is an integer number (76130).

2⁶⁶⁰²⁰⁷ is an apocalyptic number.

660207 is a deficient number, since it is larger than the sum of its proper divisors (253353).

660207 is a wasteful number, since it uses less digits than its factorization.

660207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 660207 is about 812.5312301690. The cubic root of 660207 is about 87.0749783020.

The spelling of 660207 in words is "six hundred sixty thousand, two hundred seven".