664325473 has 16 divisors (see below), whose sum is σ = 804570624. Its totient is φ = 535472640.

The previous prime is 664325449. The next prime is 664325489. The reversal of 664325473 is 374523466.

664325473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 664325473 - 2⁹ = 664324961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664325413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270933 + ... + 273373.

It is an arithmetic number, because the mean of its divisors is an integer number (50285664).

Almost surely, 2^664325473 is an apocalyptic number.

It is an amenable number.

664325473 is a deficient number, since it is larger than the sum of its proper divisors (140245151).

664325473 is a wasteful number, since it uses less digits than its factorization.

664325473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752.

The product of its digits is 362880, while the sum is 40.

The square root of 664325473 is about 25774.5120807359. The cubic root of 664325473 is about 872.5566548050.

The spelling of 664325473 in words is "six hundred sixty-four million, three hundred twenty-five thousand, four hundred seventy-three".