6660765936 has 240 divisors, whose sum is σ = 21302386560. Its totient is φ = 1924231680.

The previous prime is 6660765929. The next prime is 6660765961. The reversal of 6660765936 is 6395670666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3811815 + ... + 3813561.

It is an arithmetic number, because the mean of its divisors is an integer number (88759944).

Almost surely, 2^6660765936 is an apocalyptic number.

6660765936 is a gapful number since it is divisible by the number (66) 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 6660765936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10651193280).

6660765936 is an abundant number, since it is smaller than the sum of its proper divisors (14641620624).

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

6660765936 is a wasteful number, since it uses less digits than its factorization.

6660765936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884 (or 1875 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 54.

The square root of 6660765936 is about 81613.5156453880. The cubic root of 6660765936 is about 1881.5166138382.

The spelling of 6660765936 in words is "six billion, six hundred sixty million, seven hundred sixty-five thousand, nine hundred thirty-six".