223666245 has 32 divisors (see below), whose sum is σ = 433779840. Its totient is φ = 108443520.

The previous prime is 223666231. The next prime is 223666319. The reversal of 223666245 is 542666322.

It is not a de Polignac number, because 223666245 - 2⁶ = 223666181 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73824 + ... + 76793.

It is an arithmetic number, because the mean of its divisors is an integer number (13555620).

Almost surely, 2^223666245 is an apocalyptic number.

It is an amenable number.

223666245 is a deficient number, since it is larger than the sum of its proper divisors (210113595).

223666245 is a wasteful number, since it uses less digits than its factorization.

223666245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150642 (or 150636 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 223666245 is about 14955.4754187221. The cubic root of 223666245 is about 607.0160144579.

The spelling of 223666245 in words is "two hundred twenty-three million, six hundred sixty-six thousand, two hundred forty-five".