660740659200 has 432 divisors, whose sum is σ = 2505568305240. Its totient is φ = 165830983680.

The previous prime is 660740659177. The next prime is 660740659231. The reversal of 660740659200 is 2956047066.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7791427 + ... + 7875773.

Almost surely, 2^660740659200 is an apocalyptic number.

660740659200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660740659200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1252784152620).

660740659200 is an abundant number, since it is smaller than the sum of its proper divisors (1844827646040).

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

660740659200 is a wasteful number, since it uses less digits than its factorization.

660740659200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84402 (or 84374 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 660740659200 in words is "six hundred sixty billion, seven hundred forty million, six hundred fifty-nine thousand, two hundred".