660912 has 60 divisors (see below), whose sum is σ = 1993176. Its totient is φ = 188160.

The previous prime is 660901. The next prime is 660917. The reversal of 660912 is 219066.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (660917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2212 + ... + 2492.

2⁶⁶⁰⁹¹² 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 660912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (996588).

660912 is an abundant number, since it is smaller than the sum of its proper divisors (1332264).

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

660912 is a wasteful number, since it uses less digits than its factorization.

660912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 660912 is about 812.9649438936. The cubic root of 660912 is about 87.1059615248.

Adding to 660912 its reverse (219066), we get a palindrome (879978).

The spelling of 660912 in words is "six hundred sixty thousand, nine hundred twelve".