660706 has 8 divisors (see below), whose sum is σ = 1043280. Its totient is φ = 312948.

The previous prime is 660683. The next prime is 660719. The reversal of 660706 is 607066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8656 + ... + 8731.

It is an arithmetic number, because the mean of its divisors is an integer number (130410).

2⁶⁶⁰⁷⁰⁶ is an apocalyptic number.

660706 is a deficient number, since it is larger than the sum of its proper divisors (382574).

660706 is a wasteful number, since it uses less digits than its factorization.

660706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17408.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 660706 is about 812.8382372896. The cubic root of 660706 is about 87.0969105504.

The spelling of 660706 in words is "six hundred sixty thousand, seven hundred six".