665934133 has 8 divisors (see below), whose sum is σ = 677608416. Its totient is φ = 654284400.

The previous prime is 665934119. The next prime is 665934151. The reversal of 665934133 is 331439566.

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 665934133 - 2²¹ = 663836981 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 (665934233) 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, 53610 + ... + 64852.

It is an arithmetic number, because the mean of its divisors is an integer number (84701052).

Almost surely, 2^665934133 is an apocalyptic number.

It is an amenable number.

665934133 is a deficient number, since it is larger than the sum of its proper divisors (11674283).

665934133 is a wasteful number, since it uses less digits than its factorization.

665934133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12275.

The product of its digits is 174960, while the sum is 40.

The square root of 665934133 is about 25805.6996223702. The cubic root of 665934133 is about 873.2603839222.

The spelling of 665934133 in words is "six hundred sixty-five million, nine hundred thirty-four thousand, one hundred thirty-three".