66182223 has 4 divisors (see below), whose sum is σ = 88242968. Its totient is φ = 44121480.

The previous prime is 66182219. The next prime is 66182231. The reversal of 66182223 is 32228166.

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

It is not a de Polignac number, because 66182223 - 2² = 66182219 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 (66182023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11030368 + ... + 11030373.

It is an arithmetic number, because the mean of its divisors is an integer number (22060742).

Almost surely, 2^66182223 is an apocalyptic number.

66182223 is a deficient number, since it is larger than the sum of its proper divisors (22060745).

66182223 is a wasteful number, since it uses less digits than its factorization.

66182223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22060744.

The product of its digits is 6912, while the sum is 30.

The square root of 66182223 is about 8135.2457246232. The cubic root of 66182223 is about 404.4955829659.

The spelling of 66182223 in words is "sixty-six million, one hundred eighty-two thousand, two hundred twenty-three".