660579 has 8 divisors (see below), whose sum is σ = 909312. Its totient is φ = 426120.

The previous prime is 660563. The next prime is 660589. The reversal of 660579 is 975066.

660579 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660579 - 2⁴ = 660563 is a prime.

660579 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (660509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3459 + ... + 3644.

It is an arithmetic number, because the mean of its divisors is an integer number (113664).

2⁶⁶⁰⁵⁷⁹ is an apocalyptic number.

660579 is a deficient number, since it is larger than the sum of its proper divisors (248733).

660579 is a wasteful number, since it uses less digits than its factorization.

660579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7137.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 660579 is about 812.7601122102. The cubic root of 660579 is about 87.0913296433.

It can be divided in two parts, 66057 and 9, that added together give a palindrome (66066).

The spelling of 660579 in words is "six hundred sixty thousand, five hundred seventy-nine".