665233315 has 4 divisors (see below), whose sum is σ = 798279984. Its totient is φ = 532186648.

The previous prime is 665233277. The next prime is 665233357. The reversal of 665233315 is 513332566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 513332566 = 2 ⋅256666283.

It is a cyclic number.

It is not a de Polignac number, because 665233315 - 2²³ = 656844707 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66523327 + ... + 66523336.

It is an arithmetic number, because the mean of its divisors is an integer number (199569996).

Almost surely, 2^665233315 is an apocalyptic number.

665233315 is a deficient number, since it is larger than the sum of its proper divisors (133046669).

665233315 is a wasteful number, since it uses less digits than its factorization.

665233315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133046668.

The product of its digits is 48600, while the sum is 34.

The square root of 665233315 is about 25792.1173035484. The cubic root of 665233315 is about 872.9539414999.

The spelling of 665233315 in words is "six hundred sixty-five million, two hundred thirty-three thousand, three hundred fifteen".