660707 has 4 divisors (see below), whose sum is σ = 683520. Its totient is φ = 637896.

The previous prime is 660683. The next prime is 660719. The reversal of 660707 is 707066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 660707 - 2⁶ = 660643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660727) 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, 11363 + ... + 11420.

It is an arithmetic number, because the mean of its divisors is an integer number (170880).

2⁶⁶⁰⁷⁰⁷ is an apocalyptic number.

660707 is a deficient number, since it is larger than the sum of its proper divisors (22813).

660707 is a wasteful number, since it uses less digits than its factorization.

660707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22812.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 660707 is about 812.8388524179. The cubic root of 660707 is about 87.0969544917.

The spelling of 660707 in words is "six hundred sixty thousand, seven hundred seven".