6616370856 has 64 divisors (see below), whose sum is σ = 17169972480. Its totient is φ = 2123124480.

The previous prime is 6616370843. The next prime is 6616370867. The reversal of 6616370856 is 6580736166.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20730 + ... + 116886.

It is an arithmetic number, because the mean of its divisors is an integer number (268280820).

Almost surely, 2^6616370856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6616370856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8584986240).

6616370856 is an abundant number, since it is smaller than the sum of its proper divisors (10553601624).

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

6616370856 is a wasteful number, since it uses less digits than its factorization.

6616370856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96274 (or 96270 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 6616370856 is about 81341.0772980049. The cubic root of 6616370856 is about 1877.3270880822.

The spelling of 6616370856 in words is "six billion, six hundred sixteen million, three hundred seventy thousand, eight hundred fifty-six".