6660589320 has 768 divisors, whose sum is σ = 29156474880. Its totient is φ = 1277337600.

The previous prime is 6660589319. The next prime is 6660589339. The reversal of 6660589320 is 239850666.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 19764192 + ... + 19764528.

It is an arithmetic number, because the mean of its divisors is an integer number (37964160).

Almost surely, 2^6660589320 is an apocalyptic number.

6660589320 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 6660589320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14578237440).

6660589320 is an abundant number, since it is smaller than the sum of its proper divisors (22495885560).

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

6660589320 is a wasteful number, since it uses less digits than its factorization.

6660589320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 6660589320 is about 81612.4336115521. The cubic root of 6660589320 is about 1881.4999836749.

The spelling of 6660589320 in words is "six billion, six hundred sixty million, five hundred eighty-nine thousand, three hundred twenty".