660580873 has 8 divisors (see below), whose sum is σ = 668528640. Its totient is φ = 652644960.

The previous prime is 660580867. The next prime is 660580897. The reversal of 660580873 is 378085066.

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

It is a cyclic number.

It is not a de Polignac number, because 660580873 - 2⁵ = 660580841 is a prime.

It is a super-3 number, since 3×660580873³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660580813) 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, 164536 + ... + 168502.

It is an arithmetic number, because the mean of its divisors is an integer number (83566080).

Almost surely, 2^660580873 is an apocalyptic number.

It is an amenable number.

660580873 is a deficient number, since it is larger than the sum of its proper divisors (7947767).

660580873 is a wasteful number, since it uses less digits than its factorization.

660580873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5927.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 660580873 is about 25701.7678963919. The cubic root of 660580873 is about 870.9141195588.

It can be divided in two parts, 6605 and 80873, that added together give a palindrome (87478).

The spelling of 660580873 in words is "six hundred sixty million, five hundred eighty thousand, eight hundred seventy-three".