228667565 has 24 divisors (see below), whose sum is σ = 336008160. Its totient is φ = 148544928.

The previous prime is 228667559. The next prime is 228667597. The reversal of 228667565 is 565766822.

It is a de Polignac number, because none of the positive numbers 2^k-228667565 is a prime.

It is a nialpdrome in base 7.

It is a congruent number.

It is an unprimeable number.

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, 19907 + ... + 29216.

It is an arithmetic number, because the mean of its divisors is an integer number (14000340).

Almost surely, 2^228667565 is an apocalyptic number.

It is an amenable number.

228667565 is a deficient number, since it is larger than the sum of its proper divisors (107340595).

228667565 is a wasteful number, since it uses less digits than its factorization.

228667565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49161 (or 49154 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 47.

The square root of 228667565 is about 15121.7579996507. The cubic root of 228667565 is about 611.5071260965.

The spelling of 228667565 in words is "two hundred twenty-eight million, six hundred sixty-seven thousand, five hundred sixty-five".