660061216 has 24 divisors (see below), whose sum is σ = 1367891280. Its totient is φ = 312660288.

The previous prime is 660061187. The next prime is 660061219. The reversal of 660061216 is 612160066.

660061216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (660061219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542206 + ... + 543421.

It is an arithmetic number, because the mean of its divisors is an integer number (56995470).

Almost surely, 2^660061216 is an apocalyptic number.

It is an amenable number.

660061216 is an abundant number, since it is smaller than the sum of its proper divisors (707830064).

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

660061216 is a wasteful number, since it uses less digits than its factorization.

660061216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085656 (or 1085648 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 660061216 is about 25691.6565444893. The cubic root of 660061216 is about 870.6856865918.

The spelling of 660061216 in words is "six hundred sixty million, sixty-one thousand, two hundred sixteen".