665240234 has 4 divisors (see below), whose sum is σ = 997860354. Its totient is φ = 332620116.

The previous prime is 665240227. The next prime is 665240249. The reversal of 665240234 is 432042566.

665240234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 429525625 + 235714609 = 20725^2 + 15353^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 665240234.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166310057 + ... + 166310060.

Almost surely, 2^665240234 is an apocalyptic number.

665240234 is a deficient number, since it is larger than the sum of its proper divisors (332620120).

665240234 is a wasteful number, since it uses less digits than its factorization.

665240234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332620119.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 665240234 is about 25792.2514333278. The cubic root of 665240234 is about 872.9569679806.

The spelling of 665240234 in words is "six hundred sixty-five million, two hundred forty thousand, two hundred thirty-four".