6661304160 has 192 divisors, whose sum is σ = 25023624192. Its totient is φ = 1456367616.

The previous prime is 6661304159. The next prime is 6661304161. The reversal of 6661304160 is 614031666.

It is an interprime number because it is at equal distance from previous prime (6661304159) and next prime (6661304161).

It is a super-2 number, since 2×6661304160² = 88745946224066611200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661304161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34182 + ... + 120378.

It is an arithmetic number, because the mean of its divisors is an integer number (130331376).

Almost surely, 2^6661304160 is an apocalyptic number.

6661304160 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 6661304160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12511812096).

6661304160 is an abundant number, since it is smaller than the sum of its proper divisors (18362320032).

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

6661304160 is a wasteful number, since it uses less digits than its factorization.

6661304160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86245 (or 86237 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 6661304160 is about 81616.8129737985. The cubic root of 6661304160 is about 1881.5672911993.

The spelling of 6661304160 in words is "six billion, six hundred sixty-one million, three hundred four thousand, one hundred sixty".