23220066 has 8 divisors (see below), whose sum is σ = 46440144. Its totient is φ = 7740020.

The previous prime is 23220049. The next prime is 23220073. The reversal of 23220066 is 66002232.

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

23220066 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1935000 + ... + 1935011.

It is an arithmetic number, because the mean of its divisors is an integer number (5805018).

Almost surely, 2^23220066 is an apocalyptic number.

23220066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23220066 is a wasteful number, since it uses less digits than its factorization.

23220066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3870016.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 23220066 is about 4818.7203695587. The cubic root of 23220066 is about 285.2908326926.

Adding to 23220066 its reverse (66002232), we get a palindrome (89222298).

The spelling of 23220066 in words is "twenty-three million, two hundred twenty thousand, sixty-six".