228667563 has 32 divisors (see below), whose sum is σ = 351129600. Its totient is φ = 146923200.

The previous prime is 228667559. The next prime is 228667597. The reversal of 228667563 is 365766822.

It is a happy number.

228667563 is a `hidden beast` number, since 2 + 2 + 86 + 6 + 7 + 563 = 666.

It is not a de Polignac number, because 228667563 - 2² = 228667559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228667063) 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 31 ways as a sum of consecutive naturals, for example, 300103 + ... + 300863.

It is an arithmetic number, because the mean of its divisors is an integer number (10972800).

Almost surely, 2^228667563 is an apocalyptic number.

228667563 is a deficient number, since it is larger than the sum of its proper divisors (122462037).

228667563 is a wasteful number, since it uses less digits than its factorization.

228667563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160 (or 1154 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 228667563 is about 15121.7579335208. The cubic root of 228667563 is about 611.5071243136.

The spelling of 228667563 in words is "two hundred twenty-eight million, six hundred sixty-seven thousand, five hundred sixty-three".