6660610560 has 560 divisors, whose sum is σ = 24795850464. Its totient is φ = 1713954816.

The previous prime is 6660610559. The next prime is 6660610589. The reversal of 6660610560 is 650160666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 80248279 + ... + 80248361.

Almost surely, 2^6660610560 is an apocalyptic number.

6660610560 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 6660610560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12397925232).

6660610560 is an abundant number, since it is smaller than the sum of its proper divisors (18135239904).

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

6660610560 is an frugal number, since it uses more digits than its factorization.

6660610560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6660610560 is about 81612.5637386794. The cubic root of 6660610560 is about 1881.5019836489.

The spelling of 6660610560 in words is "six billion, six hundred sixty million, six hundred ten thousand, five hundred sixty".