3321856656 has 60 divisors (see below), whose sum is σ = 9640914192. Its totient is φ = 1107284256.

The previous prime is 3321856607. The next prime is 3321856663. The reversal of 3321856656 is 6566581233.

3321856656 is a `hidden beast` number, since 3 + 32 + 1 + 8 + 566 + 56 = 666.

3321856656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3321856656² = 22069463286023004672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423306 + ... + 431081.

Almost surely, 2^3321856656 is an apocalyptic number.

3321856656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3321856656 is an abundant number, since it is smaller than the sum of its proper divisors (6319057536).

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

3321856656 is an equidigital number, since it uses as much as digits as its factorization.

3321856656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854410 (or 854392 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 3321856656 is about 57635.5502793198. The cubic root of 3321856656 is about 1492.0852229901.

The spelling of 3321856656 in words is "three billion, three hundred twenty-one million, eight hundred fifty-six thousand, six hundred fifty-six".