660693 has 8 divisors (see below), whose sum is σ = 961056. Its totient is φ = 400400.

The previous prime is 660683. The next prime is 660719. The reversal of 660693 is 396066.

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

It is not a de Polignac number, because 660693 - 2⁵ = 660661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 660693.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 660693.

It is not an unprimeable number, because it can be changed into a prime (660643) 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, 9978 + ... + 10043.

It is an arithmetic number, because the mean of its divisors is an integer number (120132).

2⁶⁶⁰⁶⁹³ is an apocalyptic number.

It is an amenable number.

660693 is a deficient number, since it is larger than the sum of its proper divisors (300363).

660693 is a wasteful number, since it uses less digits than its factorization.

660693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20035.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 660693 is about 812.8302405792. The cubic root of 660693 is about 87.0963393093.

The spelling of 660693 in words is "six hundred sixty thousand, six hundred ninety-three".