665343023 has 16 divisors (see below), whose sum is σ = 684902400. Its totient is φ = 646169184.

The previous prime is 665343001. The next prime is 665343047. The reversal of 665343023 is 320343566.

665343023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 665343023 - 2⁸ = 665342767 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 (665343073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1906253 + ... + 1906601.

It is an arithmetic number, because the mean of its divisors is an integer number (42806400).

Almost surely, 2^665343023 is an apocalyptic number.

665343023 is a deficient number, since it is larger than the sum of its proper divisors (19559377).

665343023 is a wasteful number, since it uses less digits than its factorization.

665343023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758.

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 665343023 is about 25794.2439896966. The cubic root of 665343023 is about 873.0019270536.

Adding to 665343023 its reverse (320343566), we get a palindrome (985686589).

The spelling of 665343023 in words is "six hundred sixty-five million, three hundred forty-three thousand, twenty-three".