664353 has 12 divisors (see below), whose sum is σ = 970788. Its totient is φ = 437760.

The previous prime is 664331. The next prime is 664357. The reversal of 664353 is 353466.

It can be written as a sum of positive squares in 2 ways, for example, as 97344 + 567009 = 312^2 + 753^2 .

It is not a de Polignac number, because 664353 - 2⁶ = 664289 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 493 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (80899).

2⁶⁶⁴³⁵³ is an apocalyptic number.

It is an amenable number.

664353 is a deficient number, since it is larger than the sum of its proper divisors (306435).

664353 is a wasteful number, since it uses less digits than its factorization.

664353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 861 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 664353 is about 815.0785238245. The cubic root of 664353 is about 87.2568706395.

The spelling of 664353 in words is "six hundred sixty-four thousand, three hundred fifty-three".