664316307 has 12 divisors (see below), whose sum is σ = 959885160. Its totient is φ = 442731168.

The previous prime is 664316297. The next prime is 664316309. The reversal of 664316307 is 703613466.

It is a happy number.

664316307 is a `hidden beast` number, since 6 + 643 + 1 + 6 + 3 + 0 + 7 = 666.

664316307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664316307 - 2⁶ = 664316243 is a prime.

It is a super-2 number, since 2×664316307² = 882632311492236498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (664316309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21423 + ... + 42279.

It is an arithmetic number, because the mean of its divisors is an integer number (79990430).

Almost surely, 2^664316307 is an apocalyptic number.

664316307 is a deficient number, since it is larger than the sum of its proper divisors (295568853).

664316307 is a wasteful number, since it uses less digits than its factorization.

664316307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24402 (or 24399 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 664316307 is about 25774.3342688031. The cubic root of 664316307 is about 872.5526417665.

The spelling of 664316307 in words is "six hundred sixty-four million, three hundred sixteen thousand, three hundred seven".