228658563 has 24 divisors (see below), whose sum is σ = 386251008. Its totient is φ = 127621872.

The previous prime is 228658531. The next prime is 228658583. The reversal of 228658563 is 365856822.

228658563 is a `hidden beast` number, since 2 + 2 + 8 + 6 + 585 + 63 = 666.

It is not a de Polignac number, because 228658563 - 2⁵ = 228658531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228658523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39495 + ... + 44912.

It is an arithmetic number, because the mean of its divisors is an integer number (16093792).

Almost surely, 2^228658563 is an apocalyptic number.

228658563 is a deficient number, since it is larger than the sum of its proper divisors (157592445).

228658563 is a wasteful number, since it uses less digits than its factorization.

228658563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84463 (or 84460 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 228658563 is about 15121.4603461438. The cubic root of 228658563 is about 611.4991015516.

The spelling of 228658563 in words is "two hundred twenty-eight million, six hundred fifty-eight thousand, five hundred sixty-three".