6660554320 has 120 divisors (see below), whose sum is σ = 18041889888. Its totient is φ = 2280096000.

The previous prime is 6660554317. The next prime is 6660554333. The reversal of 6660554320 is 234550666.

It is a self number, because there is not a number n which added to its sum of digits gives 6660554320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4589595 + ... + 4591045.

Almost surely, 2^6660554320 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 6660554320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9020944944).

6660554320 is an abundant number, since it is smaller than the sum of its proper divisors (11381335568).

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

6660554320 is a wasteful number, since it uses less digits than its factorization.

6660554320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649 (or 2636 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 6660554320 is about 81612.2191831591. The cubic root of 6660554320 is about 1881.4966880398.

The spelling of 6660554320 in words is "six billion, six hundred sixty million, five hundred fifty-four thousand, three hundred twenty".