659487665 has 16 divisors (see below), whose sum is σ = 814980096. Its totient is φ = 511996800.

The previous prime is 659487643. The next prime is 659487677. The reversal of 659487665 is 566784956.

It is a happy number.

It is not a de Polignac number, because 659487665 - 2¹⁸ = 659225521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 659487665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30734 + ... + 47576.

It is an arithmetic number, because the mean of its divisors is an integer number (50936256).

Almost surely, 2^659487665 is an apocalyptic number.

It is an amenable number.

659487665 is a deficient number, since it is larger than the sum of its proper divisors (155492431).

659487665 is a wasteful number, since it uses less digits than its factorization.

659487665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17080.

The product of its digits is 10886400, while the sum is 56.

The square root of 659487665 is about 25680.4919150705. The cubic root of 659487665 is about 870.4334234442.

The spelling of 659487665 in words is "six hundred fifty-nine million, four hundred eighty-seven thousand, six hundred sixty-five".