664345353 has 16 divisors (see below), whose sum is σ = 1012837760. Its totient is φ = 379437696.

The previous prime is 664345351. The next prime is 664345379. The reversal of 664345353 is 353543466.

It is not a de Polignac number, because 664345353 - 2¹ = 664345351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664345351) 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, 43263 + ... + 56571.

It is an arithmetic number, because the mean of its divisors is an integer number (63302360).

Almost surely, 2^664345353 is an apocalyptic number.

It is an amenable number.

664345353 is a deficient number, since it is larger than the sum of its proper divisors (348492407).

664345353 is a wasteful number, since it uses less digits than its factorization.

664345353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15696.

The product of its digits is 388800, while the sum is 39.

The square root of 664345353 is about 25774.8977301560. The cubic root of 664345353 is about 872.5653584972.

The spelling of 664345353 in words is "six hundred sixty-four million, three hundred forty-five thousand, three hundred fifty-three".