664307 has 8 divisors (see below), whose sum is σ = 777216. Its totient is φ = 555912.

The previous prime is 664289. The next prime is 664319. The reversal of 664307 is 703466.

664307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 664307 - 2⁶ = 664243 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803 + ... + 1404.

It is an arithmetic number, because the mean of its divisors is an integer number (97152).

2⁶⁶⁴³⁰⁷ is an apocalyptic number.

664307 is a deficient number, since it is larger than the sum of its proper divisors (112909).

664307 is a wasteful number, since it uses less digits than its factorization.

664307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 664307 is about 815.0503051959. The cubic root of 664307 is about 87.2548566958.

The spelling of 664307 in words is "six hundred sixty-four thousand, three hundred seven".