665505353 has 8 divisors (see below), whose sum is σ = 672043680. Its totient is φ = 658998720.

The previous prime is 665505349. The next prime is 665505359. The reversal of 665505353 is 353505566.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 665505353 - 2² = 665505349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665505359) 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, 35426 + ... + 50852.

It is an arithmetic number, because the mean of its divisors is an integer number (84005460).

Almost surely, 2^665505353 is an apocalyptic number.

It is an amenable number.

665505353 is a deficient number, since it is larger than the sum of its proper divisors (6538327).

665505353 is a wasteful number, since it uses less digits than its factorization.

665505353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15847.

The product of its (nonzero) digits is 202500, while the sum is 38.

The square root of 665505353 is about 25797.3904300416. The cubic root of 665505353 is about 873.0729194462.

The spelling of 665505353 in words is "six hundred sixty-five million, five hundred five thousand, three hundred fifty-three".