6446805264 has 45 divisors (see below), whose sum is σ = 18044797719. Its totient is φ = 2148613920.

The previous prime is 6446805259. The next prime is 6446805271. The reversal of 6446805264 is 4625086446.

The square root of 6446805264 is 80292.

It is a perfect power (a square), and thus also a powerful number.

6446805264 is a `hidden beast` number, since 6 + 4 + 46 + 80 + 526 + 4 = 666.

It is a super-2 number, since 2×6446805264² = 83122596223876219392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 960159 + ... + 966849.

Almost surely, 2^6446805264 is an apocalyptic number.

6446805264 is the 80292-nd square number.

It is an amenable number.

6446805264 is an abundant number, since it is smaller than the sum of its proper divisors (11597992455).

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

6446805264 is an frugal number, since it uses more digits than its factorization.

6446805264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13396 (or 6696 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The cubic root of 6446805264 is about 1861.1506026891.

The spelling of 6446805264 in words is "six billion, four hundred forty-six million, eight hundred five thousand, two hundred sixty-four".