68660 has 12 divisors (see below), whose sum is σ = 144228. Its totient is φ = 27456.

The previous prime is 68659. The next prime is 68669. The reversal of 68660 is 6686.

It can be written as a sum of positive squares in 2 ways, for example, as 23716 + 44944 = 154^2 + 212^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68669) 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, 1697 + ... + 1736.

It is an arithmetic number, because the mean of its divisors is an integer number (12019).

2⁶⁸⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

68660 is an abundant number, since it is smaller than the sum of its proper divisors (75568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72114).

68660 is a wasteful number, since it uses less digits than its factorization.

68660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442 (or 3440 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 68660 is about 262.0305325721. The cubic root of 68660 is about 40.9481796234.

Adding to 68660 its sum of digits (26), we get a palindrome (68686).

The spelling of 68660 in words is "sixty-eight thousand, six hundred sixty".