223612245 has 24 divisors (see below), whose sum is σ = 401952096. Its totient is φ = 119259216.

The previous prime is 223612241. The next prime is 223612261. The reversal of 223612245 is 542216322.

It is a happy number.

223612245 is a `hidden beast` number, since 2 + 2 + 3 + 612 + 2 + 45 = 666.

It is not a de Polignac number, because 223612245 - 2² = 223612241 is a prime.

It is a super-2 number, since 2×223612245² = 100004872227880050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223612241) 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 in 23 ways as a sum of consecutive naturals, for example, 90807 + ... + 93236.

It is an arithmetic number, because the mean of its divisors is an integer number (16748004).

Almost surely, 2^223612245 is an apocalyptic number.

It is an amenable number.

223612245 is a deficient number, since it is larger than the sum of its proper divisors (178339851).

223612245 is an equidigital number, since it uses as much as digits as its factorization.

223612245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184063 (or 184051 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 223612245 is about 14953.6699508850. The cubic root of 223612245 is about 606.9671596667.

Adding to 223612245 its reverse (542216322), we get a palindrome (765828567).

The spelling of 223612245 in words is "two hundred twenty-three million, six hundred twelve thousand, two hundred forty-five".