664463317 has 4 divisors (see below), whose sum is σ = 759386656. Its totient is φ = 569539980.

The previous prime is 664463281. The next prime is 664463323. The reversal of 664463317 is 713364466.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 713364466 = 2 ⋅356682233.

It is a cyclic number.

It is not a de Polignac number, because 664463317 - 2²³ = 656074709 is a prime.

It is a super-2 number, since 2×664463317² = 883022999277284978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 664463317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664463347) by changing a digit.

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, 47461659 + ... + 47461672.

It is an arithmetic number, because the mean of its divisors is an integer number (189846664).

Almost surely, 2^664463317 is an apocalyptic number.

It is an amenable number.

664463317 is a deficient number, since it is larger than the sum of its proper divisors (94923339).

664463317 is an equidigital number, since it uses as much as digits as its factorization.

664463317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94923338.

The product of its digits is 217728, while the sum is 40.

The square root of 664463317 is about 25777.1859790785. The cubic root of 664463317 is about 872.6170009187.

The spelling of 664463317 in words is "six hundred sixty-four million, four hundred sixty-three thousand, three hundred seventeen".