659985079 has 8 divisors (see below), whose sum is σ = 711270560. Its totient is φ = 608773536.

The previous prime is 659985061. The next prime is 659985143. The reversal of 659985079 is 970589956.

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 659985079 - 2¹⁵ = 659952311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659985019) 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, 814 + ... + 36340.

It is an arithmetic number, because the mean of its divisors is an integer number (88908820).

Almost surely, 2^659985079 is an apocalyptic number.

659985079 is a deficient number, since it is larger than the sum of its proper divisors (51285481).

659985079 is a wasteful number, since it uses less digits than its factorization.

659985079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36969.

The product of its (nonzero) digits is 6123600, while the sum is 58.

The square root of 659985079 is about 25690.1747561203. The cubic root of 659985079 is about 870.6522079066.

The spelling of 659985079 in words is "six hundred fifty-nine million, nine hundred eighty-five thousand, seventy-nine".