665302323 has 16 divisors (see below), whose sum is σ = 1025187840. Its totient is φ = 375900096.

The previous prime is 665302289. The next prime is 665302397. The reversal of 665302323 is 323203566.

It is not a de Polignac number, because 665302323 - 2²⁰ = 664253747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665302823) 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, 176115 + ... + 179852.

It is an arithmetic number, because the mean of its divisors is an integer number (64074240).

Almost surely, 2^665302323 is an apocalyptic number.

665302323 is a deficient number, since it is larger than the sum of its proper divisors (359885517).

665302323 is a wasteful number, since it uses less digits than its factorization.

665302323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356066.

The product of its (nonzero) digits is 19440, while the sum is 30.

The square root of 665302323 is about 25793.4550419288. The cubic root of 665302323 is about 872.9841257583.

Adding to 665302323 its reverse (323203566), we get a palindrome (988505889).

The spelling of 665302323 in words is "six hundred sixty-five million, three hundred two thousand, three hundred twenty-three".