659998897 has 8 divisors (see below), whose sum is σ = 681589760. Its totient is φ = 638426880.

The previous prime is 659998891. The next prime is 659998903. The reversal of 659998897 is 798899956.

659998897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (659998891) and next prime (659998903).

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 659998897 - 2¹⁹ = 659474609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659998891) 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, 115729 + ... + 121297.

It is an arithmetic number, because the mean of its divisors is an integer number (85198720).

Almost surely, 2^659998897 is an apocalyptic number.

It is an amenable number.

659998897 is a deficient number, since it is larger than the sum of its proper divisors (21590863).

659998897 is a wasteful number, since it uses less digits than its factorization.

659998897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9423.

The product of its digits is 88179840, while the sum is 70.

The square root of 659998897 is about 25690.4436902129. The cubic root of 659998897 is about 870.6582840986.

The spelling of 659998897 in words is "six hundred fifty-nine million, nine hundred ninety-eight thousand, eight hundred ninety-seven".