665541335 has 8 divisors (see below), whose sum is σ = 801758736. Its totient is φ = 530360320.

The previous prime is 665541323. The next prime is 665541337. The reversal of 665541335 is 533145566.

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

It is not a de Polignac number, because 665541335 - 2⁴ = 665541319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665541337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257681 + ... + 260250.

It is an arithmetic number, because the mean of its divisors is an integer number (100219842).

Almost surely, 2^665541335 is an apocalyptic number.

665541335 is a deficient number, since it is larger than the sum of its proper divisors (136217401).

665541335 is a wasteful number, since it uses less digits than its factorization.

665541335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518193.

The product of its digits is 162000, while the sum is 38.

The square root of 665541335 is about 25798.0878167356. The cubic root of 665541335 is about 873.0886540272.

The spelling of 665541335 in words is "six hundred sixty-five million, five hundred forty-one thousand, three hundred thirty-five".