664746476 has 12 divisors (see below), whose sum is σ = 1163559600. Its totient is φ = 332300880.

The previous prime is 664746449. The next prime is 664746487. The reversal of 664746476 is 674647466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6206 + ... + 36986.

It is an arithmetic number, because the mean of its divisors is an integer number (96963300).

Almost surely, 2^664746476 is an apocalyptic number.

It is an amenable number.

664746476 is a deficient number, since it is larger than the sum of its proper divisors (498813124).

664746476 is a wasteful number, since it uses less digits than its factorization.

664746476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36184 (or 36182 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 50.

The square root of 664746476 is about 25782.6778283405. The cubic root of 664746476 is about 872.7409376661.

The spelling of 664746476 in words is "six hundred sixty-four million, seven hundred forty-six thousand, four hundred seventy-six".