660583 has 16 divisors (see below), whose sum is σ = 861696. Its totient is φ = 491040.

The previous prime is 660563. The next prime is 660589. The reversal of 660583 is 385066.

It is not a de Polignac number, because 660583 - 2⁹ = 660071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1585 + ... + 1957.

It is an arithmetic number, because the mean of its divisors is an integer number (53856).

2⁶⁶⁰⁵⁸³ is an apocalyptic number.

660583 is a deficient number, since it is larger than the sum of its proper divisors (201113).

660583 is a wasteful number, since it uses less digits than its factorization.

660583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 660583 is about 812.7625729572. The cubic root of 660583 is about 87.0915054308.

The spelling of 660583 in words is "six hundred sixty thousand, five hundred eighty-three".