659980212 has 24 divisors (see below), whose sum is σ = 1557259200. Its totient is φ = 217521216.

The previous prime is 659980199. The next prime is 659980213. The reversal of 659980212 is 212089956.

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 7 ways as a sum of consecutive naturals, for example, 307912 + ... + 310047.

It is an arithmetic number, because the mean of its divisors is an integer number (64885800).

Almost surely, 2^659980212 is an apocalyptic number.

It is an amenable number.

659980212 is an abundant number, since it is smaller than the sum of its proper divisors (897278988).

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

659980212 is a wasteful number, since it uses less digits than its factorization.

659980212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618055 (or 618053 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 659980212 is about 25690.0800310159. The cubic root of 659980212 is about 870.6500677194.

The spelling of 659980212 in words is "six hundred fifty-nine million, nine hundred eighty thousand, two hundred twelve".