66260 has 12 divisors (see below), whose sum is σ = 139188. Its totient is φ = 26496.

The previous prime is 66239. The next prime is 66271. The reversal of 66260 is 6266.

It can be written as a sum of positive squares in 2 ways, for example, as 44944 + 21316 = 212^2 + 146^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 3313 = 66260 / (6 + 6 + 2 + 6 + 0).

It is a congruent number.

It is an unprimeable number.

66260 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1637 + ... + 1676.

It is an arithmetic number, because the mean of its divisors is an integer number (11599).

2⁶⁶²⁶⁰ is an apocalyptic number.

It is an amenable number.

66260 is an abundant number, since it is smaller than the sum of its proper divisors (72928).

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 (69594).

66260 is a wasteful number, since it uses less digits than its factorization.

66260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322 (or 3320 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 66260 is about 257.4101785089. The cubic root of 66260 is about 40.4653974628.

The spelling of 66260 in words is "sixty-six thousand, two hundred sixty".