6446594478 has 8 divisors (see below), whose sum is σ = 12893188968. Its totient is φ = 2148864824.

The previous prime is 6446594477. The next prime is 6446594513. The reversal of 6446594478 is 8744956446.

It is a sphenic number, since it is the product of 3 distinct primes.

6446594478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446594477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537216201 + ... + 537216212.

It is an arithmetic number, because the mean of its divisors is an integer number (1611648621).

Almost surely, 2^6446594478 is an apocalyptic number.

6446594478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6446594478 is a wasteful number, since it uses less digits than its factorization.

6446594478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074432418.

The product of its digits is 23224320, while the sum is 57.

The square root of 6446594478 is about 80290.6873678386. The cubic root of 6446594478 is about 1861.1303182872.

The spelling of 6446594478 in words is "six billion, four hundred forty-six million, five hundred ninety-four thousand, four hundred seventy-eight".