660546 has 12 divisors (see below), whose sum is σ = 1431222. Its totient is φ = 220176.

The previous prime is 660529. The next prime is 660547. The reversal of 660546 is 645066.

It can be written as a sum of positive squares in only one way, i.e., 622521 + 38025 = 789^2 + 195^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 660546.

It is not an unprimeable number, because it can be changed into a prime (660547) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18331 + ... + 18366.

2⁶⁶⁰⁵⁴⁶ is an apocalyptic number.

660546 is an abundant number, since it is smaller than the sum of its proper divisors (770676).

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

660546 is a wasteful number, since it uses less digits than its factorization.

660546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36705 (or 36702 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 660546 is about 812.7398107636. The cubic root of 660546 is about 87.0898793692.

The spelling of 660546 in words is "six hundred sixty thousand, five hundred forty-six".