659916798 has 16 divisors (see below), whose sum is σ = 1320093840. Its totient is φ = 219928896.

The previous prime is 659916787. The next prime is 659916811. The reversal of 659916798 is 897619956.

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 41736 + ... + 55332.

It is an arithmetic number, because the mean of its divisors is an integer number (82505865).

Almost surely, 2^659916798 is an apocalyptic number.

659916798 is an abundant number, since it is smaller than the sum of its proper divisors (660177042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

659916798 is a wasteful number, since it uses less digits than its factorization.

659916798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21691.

The product of its digits is 7348320, while the sum is 60.

The square root of 659916798 is about 25688.8457895640. The cubic root of 659916798 is about 870.6221814430.

The spelling of 659916798 in words is "six hundred fifty-nine million, nine hundred sixteen thousand, seven hundred ninety-eight".