6446664604 has 6 divisors (see below), whose sum is σ = 11281663064. Its totient is φ = 3223332300.

The previous prime is 6446664599. The next prime is 6446664629. The reversal of 6446664604 is 4064666446.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 805833072 + ... + 805833079.

Almost surely, 2^6446664604 is an apocalyptic number.

It is an amenable number.

6446664604 is a deficient number, since it is larger than the sum of its proper divisors (4834998460).

6446664604 is a wasteful number, since it uses less digits than its factorization.

6446664604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611666155 (or 1611666153 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 46.

The square root of 6446664604 is about 80291.1240673588. The cubic root of 6446664604 is about 1861.1370667160.

The spelling of 6446664604 in words is "six billion, four hundred forty-six million, six hundred sixty-four thousand, six hundred four".