6633620656 has 40 divisors (see below), whose sum is σ = 13934264400. Its totient is φ = 3041108736.

The previous prime is 6633620633. The next prime is 6633620681. The reversal of 6633620656 is 6560263366.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76030 + ... + 138013.

It is an arithmetic number, because the mean of its divisors is an integer number (348356610).

Almost surely, 2^6633620656 is an apocalyptic number.

It is an amenable number.

6633620656 is an abundant number, since it is smaller than the sum of its proper divisors (7300643744).

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

6633620656 is a wasteful number, since it uses less digits than its factorization.

6633620656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214213 (or 214207 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 43.

The square root of 6633620656 is about 81447.0420334588. The cubic root of 6633620656 is about 1878.9571566611.

The spelling of 6633620656 in words is "six billion, six hundred thirty-three million, six hundred twenty thousand, six hundred fifty-six".