660360 has 32 divisors (see below), whose sum is σ = 1981440. Its totient is φ = 176064.

The previous prime is 660349. The next prime is 660367. The reversal of 660360 is 63066.

It is not an unprimeable number, because it can be changed into a prime (660367) by changing a digit.

660360 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 (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2632 + ... + 2871.

It is an arithmetic number, because the mean of its divisors is an integer number (61920).

2⁶⁶⁰³⁶⁰ is an apocalyptic number.

660360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

660360 is an abundant number, since it is smaller than the sum of its proper divisors (1321080).

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

660360 is a wasteful number, since it uses less digits than its factorization.

660360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5517 (or 5513 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 660360 is about 812.6253749422. The cubic root of 660360 is about 87.0817041938.

The spelling of 660360 in words is "six hundred sixty thousand, three hundred sixty".