67660 has 24 divisors (see below), whose sum is σ = 151200. Its totient is φ = 25344.

The previous prime is 67651. The next prime is 67679. The reversal of 67660 is 6676.

It is an Ulam number.

It is an unprimeable number.

67660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241 + ... + 439.

It is an arithmetic number, because the mean of its divisors is an integer number (6300).

2⁶⁷⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75600).

67660 is an abundant number, since it is smaller than the sum of its proper divisors (83540).

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

67660 is a wasteful number, since it uses less digits than its factorization.

67660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 223 counting only the distinct ones).

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

The square root of 67660 is about 260.1153590236. The cubic root of 67660 is about 40.7484097388.

It can be divided in two parts, 67 and 660, that added together give a palindrome (727).

The spelling of 67660 in words is "sixty-seven thousand, six hundred sixty".