660060 has 72 divisors (see below), whose sum is σ = 2118480. Its totient is φ = 165888.

The previous prime is 660053. The next prime is 660061. The reversal of 660060 is 60066.

660060 is a `hidden beast` number, since 6 + 600 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3324 + ... + 3516.

2⁶⁶⁰⁰⁶⁰ is an apocalyptic number.

660060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1059240).

660060 is an abundant number, since it is smaller than the sum of its proper divisors (1458420).

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

660060 is a wasteful number, since it uses less digits than its factorization.

660060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 660060 is about 812.4407670717. The cubic root of 660060 is about 87.0685151917.

The spelling of 660060 in words is "six hundred sixty thousand, sixty".