65165223 has 4 divisors (see below), whose sum is σ = 86886968. Its totient is φ = 43443480.

The previous prime is 65165197. The next prime is 65165227. The reversal of 65165223 is 32256156.

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

It is not a de Polignac number, because 65165223 - 2²⁴ = 48388007 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 (65165227) 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, 10860868 + ... + 10860873.

It is an arithmetic number, because the mean of its divisors is an integer number (21721742).

Almost surely, 2^65165223 is an apocalyptic number.

65165223 is a deficient number, since it is larger than the sum of its proper divisors (21721745).

65165223 is a wasteful number, since it uses less digits than its factorization.

65165223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21721744.

The product of its digits is 10800, while the sum is 30.

The square root of 65165223 is about 8072.4979405386. The cubic root of 65165223 is about 402.4129626753.

The spelling of 65165223 in words is "sixty-five million, one hundred sixty-five thousand, two hundred twenty-three".