223565427 has 20 divisors (see below), whose sum is σ = 339450496. Its totient is φ = 146597040.

The previous prime is 223565423. The next prime is 223565429. The reversal of 223565427 is 724565322.

223565427 is a `hidden beast` number, since 223 + 5 + 6 + 5 + 427 = 666.

It is not a de Polignac number, because 223565427 - 2² = 223565423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223565391 and 223565400.

It is not an unprimeable number, because it can be changed into a prime (223565423) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17683 + ... + 27564.

Almost surely, 2^223565427 is an apocalyptic number.

223565427 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

223565427 is a deficient number, since it is larger than the sum of its proper divisors (115885069).

223565427 is an equidigital number, since it uses as much as digits as its factorization.

223565427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45320 (or 45311 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 223565427 is about 14952.1044338247. The cubic root of 223565427 is about 606.9247961966.

The spelling of 223565427 in words is "two hundred twenty-three million, five hundred sixty-five thousand, four hundred twenty-seven".