66222023 has 8 divisors (see below), whose sum is σ = 76719648. Its totient is φ = 55983744.

The previous prime is 66222019. The next prime is 66222053. The reversal of 66222023 is 32022266.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66222023 - 2² = 66222019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66222023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66222053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64286 + ... + 65307.

It is an arithmetic number, because the mean of its divisors is an integer number (9589956).

Almost surely, 2^66222023 is an apocalyptic number.

66222023 is a deficient number, since it is larger than the sum of its proper divisors (10497625).

66222023 is a wasteful number, since it uses less digits than its factorization.

66222023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129673.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 66222023 is about 8137.6915031230. The cubic root of 66222023 is about 404.5766505467.

Adding to 66222023 its reverse (32022266), we get a palindrome (98244289).

The spelling of 66222023 in words is "sixty-six million, two hundred twenty-two thousand, twenty-three".