660682 has 16 divisors (see below), whose sum is σ = 1101600. Its totient is φ = 294640.

The previous prime is 660661. The next prime is 660683. The reversal of 660682 is 286066.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 660682.

It is not an unprimeable number, because it can be changed into a prime (660683) 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, 1044 + ... + 1552.

It is an arithmetic number, because the mean of its divisors is an integer number (68850).

2⁶⁶⁰⁶⁸² is an apocalyptic number.

660682 is a deficient number, since it is larger than the sum of its proper divisors (440918).

660682 is a wasteful number, since it uses less digits than its factorization.

660682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 660682 is about 812.8234740705. The cubic root of 660682 is about 87.0958559456.

The spelling of 660682 in words is "six hundred sixty thousand, six hundred eighty-two".