659664841 has 8 divisors (see below), whose sum is σ = 742848768. Its totient is φ = 580350000.

The previous prime is 659664809. The next prime is 659664911. The reversal of 659664841 is 148466956.

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 659664841 - 2⁵ = 659664809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659662841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966910 + ... + 967591.

It is an arithmetic number, because the mean of its divisors is an integer number (92856096).

Almost surely, 2^659664841 is an apocalyptic number.

It is an amenable number.

659664841 is a deficient number, since it is larger than the sum of its proper divisors (83183927).

659664841 is a wasteful number, since it uses less digits than its factorization.

659664841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934543.

The product of its digits is 1244160, while the sum is 49.

The square root of 659664841 is about 25683.9413058043. The cubic root of 659664841 is about 870.5113658186.

It can be divided in two parts, 65966 and 4841, that added together give a palindrome (70807).

The spelling of 659664841 in words is "six hundred fifty-nine million, six hundred sixty-four thousand, eight hundred forty-one".