223697445 has 16 divisors (see below), whose sum is σ = 370258560. Its totient is φ = 115191104.

The previous prime is 223697443. The next prime is 223697447. The reversal of 223697445 is 544796322.

223697445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (223697443) and next prime (223697447).

It is a cyclic number.

It is not a de Polignac number, because 223697445 - 2¹ = 223697443 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 223697397 and 223697406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223697443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256689 + ... + 257558.

It is an arithmetic number, because the mean of its divisors is an integer number (23141160).

Almost surely, 2^223697445 is an apocalyptic number.

It is an amenable number.

223697445 is a deficient number, since it is larger than the sum of its proper divisors (146561115).

223697445 is a wasteful number, since it uses less digits than its factorization.

223697445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514284.

The product of its digits is 362880, while the sum is 42.

The square root of 223697445 is about 14956.5184785765. The cubic root of 223697445 is about 607.0442380865.

It can be divided in two parts, 2236 and 97445, that added together give a triangular number (99681 = T₄₄₆).

The spelling of 223697445 in words is "two hundred twenty-three million, six hundred ninety-seven thousand, four hundred forty-five".