660573 has 12 divisors (see below), whose sum is σ = 1004640. Its totient is φ = 417096.

The previous prime is 660563. The next prime is 660589. The reversal of 660573 is 375066.

It is not a de Polignac number, because 660573 - 2⁴ = 660557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660503) 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, 1761 + ... + 2102.

It is an arithmetic number, because the mean of its divisors is an integer number (83720).

2⁶⁶⁰⁵⁷³ is an apocalyptic number.

It is an amenable number.

660573 is a deficient number, since it is larger than the sum of its proper divisors (344067).

660573 is a wasteful number, since it uses less digits than its factorization.

660573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888 (or 3885 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 660573 is about 812.7564210758. The cubic root of 660573 is about 87.0910659607.

The spelling of 660573 in words is "six hundred sixty thousand, five hundred seventy-three".