664288353 has 24 divisors (see below), whose sum is σ = 977723136. Its totient is φ = 434498400.

The previous prime is 664288337. The next prime is 664288357. The reversal of 664288353 is 353882466.

It is a happy number.

It is not a de Polignac number, because 664288353 - 2⁴ = 664288337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 664288299 and 664288308.

It is not an unprimeable number, because it can be changed into a prime (664288357) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255088 + ... + 257678.

It is an arithmetic number, because the mean of its divisors is an integer number (40738464).

Almost surely, 2^664288353 is an apocalyptic number.

It is an amenable number.

664288353 is a deficient number, since it is larger than the sum of its proper divisors (313434783).

664288353 is a wasteful number, since it uses less digits than its factorization.

664288353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125 (or 3122 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 664288353 is about 25773.7919794508. The cubic root of 664288353 is about 872.5404027782.

The spelling of 664288353 in words is "six hundred sixty-four million, two hundred eighty-eight thousand, three hundred fifty-three".