6446305564 has 12 divisors (see below), whose sum is σ = 11284756000. Its totient is φ = 3222089568.

The previous prime is 6446305559. The next prime is 6446305583. The reversal of 6446305564 is 4655036446.

It is a self number, because there is not a number n which added to its sum of digits gives 6446305564.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 252084 + ... + 276475.

Almost surely, 2^6446305564 is an apocalyptic number.

It is an amenable number.

6446305564 is a deficient number, since it is larger than the sum of its proper divisors (4838450436).

6446305564 is a wasteful number, since it uses less digits than its factorization.

6446305564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531612 (or 531610 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The square root of 6446305564 is about 80288.8881726482. Note that the first 3 decimals coincide. The cubic root of 6446305564 is about 1861.1025147371.

The spelling of 6446305564 in words is "six billion, four hundred forty-six million, three hundred five thousand, five hundred sixty-four".