6366856320 has 768 divisors, whose sum is σ = 26602318080. Its totient is φ = 1384120320.

The previous prime is 6366856313. The next prime is 6366856333. The reversal of 6366856320 is 236586636.

6366856320 is a `hidden beast` number, since 6 + 3 + 6 + 6 + 8 + 5 + 632 + 0 = 666.

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 95 ways as a sum of consecutive naturals, for example, 24773632 + ... + 24773888.

It is an arithmetic number, because the mean of its divisors is an integer number (34638435).

Almost surely, 2^6366856320 is an apocalyptic number.

6366856320 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 6366856320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13301159040).

6366856320 is an abundant number, since it is smaller than the sum of its proper divisors (20235461760).

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

6366856320 is a wasteful number, since it uses less digits than its factorization.

6366856320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The square root of 6366856320 is about 79792.5831139712. The cubic root of 6366856320 is about 1853.4249987729.

The spelling of 6366856320 in words is "six billion, three hundred sixty-six million, eight hundred fifty-six thousand, three hundred twenty".