6649303556 has 24 divisors (see below), whose sum is σ = 13322949696. Its totient is φ = 2844485280.

The previous prime is 6649303547. The next prime is 6649303561. The reversal of 6649303556 is 6553039466.

It is a self number, because there is not a number n which added to its sum of digits gives 6649303556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201755 + ... + 232386.

It is an arithmetic number, because the mean of its divisors is an integer number (555122904).

Almost surely, 2^6649303556 is an apocalyptic number.

It is an amenable number.

6649303556 is an abundant number, since it is smaller than the sum of its proper divisors (6673646140).

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

6649303556 is a wasteful number, since it uses less digits than its factorization.

6649303556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434699 (or 434697 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 47.

The square root of 6649303556 is about 81543.2618675510. The cubic root of 6649303556 is about 1880.4367059285.

The spelling of 6649303556 in words is "six billion, six hundred forty-nine million, three hundred three thousand, five hundred fifty-six".