223999966 has 8 divisors (see below), whose sum is σ = 339464160. Its totient is φ = 110845248.

The previous prime is 223999903. The next prime is 224000047. The reversal of 223999966 is 669999322.

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

It is a congruent 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, 577126 + ... + 577513.

It is an arithmetic number, because the mean of its divisors is an integer number (42433020).

Almost surely, 2^223999966 is an apocalyptic number.

223999966 is a deficient number, since it is larger than the sum of its proper divisors (115464194).

223999966 is a wasteful number, since it uses less digits than its factorization.

223999966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154738.

The product of its digits is 2834352, while the sum is 55.

The square root of 223999966 is about 14966.6284112354. The cubic root of 223999966 is about 607.3177636477.

The spelling of 223999966 in words is "two hundred twenty-three million, nine hundred ninety-nine thousand, nine hundred sixty-six".