6646582366 has 16 divisors (see below), whose sum is σ = 10535040000. Its totient is φ = 3138560568.

The previous prime is 6646582339. The next prime is 6646582367. The reversal of 6646582366 is 6632856466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646582367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910866 + ... + 918133.

It is an arithmetic number, because the mean of its divisors is an integer number (658440000).

Almost surely, 2^6646582366 is an apocalyptic number.

6646582366 is a deficient number, since it is larger than the sum of its proper divisors (3888457634).

6646582366 is a wasteful number, since it uses less digits than its factorization.

6646582366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829103.

The product of its digits is 7464960, while the sum is 52.

The square root of 6646582366 is about 81526.5745999426. The cubic root of 6646582366 is about 1880.1801515533.

The spelling of 6646582366 in words is "six billion, six hundred forty-six million, five hundred eighty-two thousand, three hundred sixty-six".