665070607223 has 4 divisors (see below), whose sum is σ = 725531571528. Its totient is φ = 604609642920.

The previous prime is 665070607213. The next prime is 665070607321. The reversal of 665070607223 is 322706070566.

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

It is a cyclic number.

It is not a de Polignac number, because 665070607223 - 2¹⁴ = 665070590839 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 (665070607213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30230482136 + ... + 30230482157.

It is an arithmetic number, because the mean of its divisors is an integer number (181382892882).

Almost surely, 2^665070607223 is an apocalyptic number.

665070607223 is a deficient number, since it is larger than the sum of its proper divisors (60460964305).

665070607223 is a wasteful number, since it uses less digits than its factorization.

665070607223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60460964304.

The product of its (nonzero) digits is 635040, while the sum is 44.

Adding to 665070607223 its reverse (322706070566), we get a palindrome (987776677789).

The spelling of 665070607223 in words is "six hundred sixty-five billion, seventy million, six hundred seven thousand, two hundred twenty-three".