6644046828 has 24 divisors (see below), whose sum is σ = 16414704432. Its totient is φ = 2084406784.

The previous prime is 6644046803. The next prime is 6644046839. The reversal of 6644046828 is 8286404466.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16284225 + ... + 16284632.

It is an arithmetic number, because the mean of its divisors is an integer number (683946018).

Almost surely, 2^6644046828 is an apocalyptic number.

6644046828 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6644046828 is an abundant number, since it is smaller than the sum of its proper divisors (9770657604).

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

6644046828 is a wasteful number, since it uses less digits than its factorization.

6644046828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32568881 (or 32568879 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 48.

The square root of 6644046828 is about 81511.0227392590. The cubic root of 6644046828 is about 1879.9410374597.

The spelling of 6644046828 in words is "six billion, six hundred forty-four million, forty-six thousand, eight hundred twenty-eight".