665135335 has 4 divisors (see below), whose sum is σ = 798162408. Its totient is φ = 532108264.

The previous prime is 665135311. The next prime is 665135351. The reversal of 665135335 is 533531566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 533531566 = 2 ⋅266765783.

It is a cyclic number.

It is not a de Polignac number, because 665135335 - 2¹⁵ = 665102567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665135294 and 665135303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66513529 + ... + 66513538.

It is an arithmetic number, because the mean of its divisors is an integer number (199540602).

Almost surely, 2^665135335 is an apocalyptic number.

665135335 is a deficient number, since it is larger than the sum of its proper divisors (133027073).

665135335 is a wasteful number, since it uses less digits than its factorization.

665135335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133027072.

The product of its digits is 121500, while the sum is 37.

The square root of 665135335 is about 25790.2178160635. The cubic root of 665135335 is about 872.9110812358.

The spelling of 665135335 in words is "six hundred sixty-five million, one hundred thirty-five thousand, three hundred thirty-five".