659980216 has 96 divisors (see below), whose sum is σ = 1524718080. Its totient is φ = 266481600.

The previous prime is 659980213. The next prime is 659980241. The reversal of 659980216 is 612089956.

It is a super-2 number, since 2×659980216² = 871147771022813312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659980213) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 639621 + ... + 640651.

It is an arithmetic number, because the mean of its divisors is an integer number (15882480).

Almost surely, 2^659980216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659980216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762359040).

659980216 is an abundant number, since it is smaller than the sum of its proper divisors (864737864).

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

659980216 is a wasteful number, since it uses less digits than its factorization.

659980216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 659980216 is about 25690.0801088669. The cubic root of 659980216 is about 870.6500694784.

The spelling of 659980216 in words is "six hundred fifty-nine million, nine hundred eighty thousand, two hundred sixteen".