223606645 has 8 divisors (see below), whose sum is σ = 268574904. Its totient is φ = 178720704.

The previous prime is 223606609. The next prime is 223606657. The reversal of 223606645 is 546606322.

It can be written as a sum of positive squares in 4 ways, for example, as 7193124 + 216413521 = 2682^2 + 14711^2 .

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 223606645 - 2⁷ = 223606517 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 223606645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14434 + ... + 25603.

It is an arithmetic number, because the mean of its divisors is an integer number (33571863).

Almost surely, 2^223606645 is an apocalyptic number.

It is an amenable number.

223606645 is a deficient number, since it is larger than the sum of its proper divisors (44968259).

223606645 is a wasteful number, since it uses less digits than its factorization.

223606645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41159.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 223606645 is about 14953.4827047080. The cubic root of 223606645 is about 606.9620927938.

The spelling of 223606645 in words is "two hundred twenty-three million, six hundred six thousand, six hundred forty-five".