665135336 has 16 divisors (see below), whose sum is σ = 1320489540. Its totient is φ = 313004800.

The previous prime is 665135311. The next prime is 665135351. The reversal of 665135336 is 633531566.

It can be written as a sum of positive squares in 2 ways, for example, as 665124100 + 11236 = 25790^2 + 106^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 665135336.

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, 2445215 + ... + 2445486.

Almost surely, 2^665135336 is an apocalyptic number.

It is an amenable number.

665135336 is a deficient number, since it is larger than the sum of its proper divisors (655354204).

665135336 is a wasteful number, since it uses less digits than its factorization.

665135336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890724 (or 4890720 counting only the distinct ones).

The product of its digits is 145800, while the sum is 38.

The square root of 665135336 is about 25790.2178354507. The cubic root of 665135336 is about 872.9110816733.

The spelling of 665135336 in words is "six hundred sixty-five million, one hundred thirty-five thousand, three hundred thirty-six".