23666222 has 4 divisors (see below), whose sum is σ = 35499336. Its totient is φ = 11833110.

The previous prime is 23666221. The next prime is 23666317. The reversal of 23666222 is 22266632.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23666221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5916554 + ... + 5916557.

It is an arithmetic number, because the mean of its divisors is an integer number (8874834).

Almost surely, 2^23666222 is an apocalyptic number.

23666222 is a deficient number, since it is larger than the sum of its proper divisors (11833114).

23666222 is a wasteful number, since it uses less digits than its factorization.

23666222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11833113.

The product of its digits is 10368, while the sum is 29.

The square root of 23666222 is about 4864.7941374739. The cubic root of 23666222 is about 287.1064690146.

The spelling of 23666222 in words is "twenty-three million, six hundred sixty-six thousand, two hundred twenty-two".