6466448405 has 12 divisors (see below), whose sum is σ = 7867524420. Its totient is φ = 5102272512.

The previous prime is 6466448399. The next prime is 6466448431. The reversal of 6466448405 is 5048446646.

It can be written as a sum of positive squares in 6 ways, for example, as 714439441 + 5752008964 = 26729^2 + 75842^2 .

It is not a de Polignac number, because 6466448405 - 2¹⁰ = 6466447381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6466448405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94700 + ... + 147989.

It is an arithmetic number, because the mean of its divisors is an integer number (655627035).

Almost surely, 2^6466448405 is an apocalyptic number.

It is an amenable number.

6466448405 is a deficient number, since it is larger than the sum of its proper divisors (1401076015).

6466448405 is an equidigital number, since it uses as much as digits as its factorization.

6466448405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242840 (or 242767 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 47.

The square root of 6466448405 is about 80414.2301150735. The cubic root of 6466448405 is about 1863.0389682625.

The spelling of 6466448405 in words is "six billion, four hundred sixty-six million, four hundred forty-eight thousand, four hundred five".