228699865 has 32 divisors (see below), whose sum is σ = 302284800. Its totient is φ = 165447360.

The previous prime is 228699853. The next prime is 228699869. The reversal of 228699865 is 568996822.

It is not a de Polignac number, because 228699865 - 2¹⁵ = 228667097 is a prime.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (228699869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232164 + ... + 233146.

It is an arithmetic number, because the mean of its divisors is an integer number (9446400).

Almost surely, 2^228699865 is an apocalyptic number.

It is an amenable number.

228699865 is a deficient number, since it is larger than the sum of its proper divisors (73584935).

228699865 is a wasteful number, since it uses less digits than its factorization.

228699865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117.

The product of its digits is 3732480, while the sum is 55.

The square root of 228699865 is about 15122.8259594561. The cubic root of 228699865 is about 611.5359171645.

The spelling of 228699865 in words is "two hundred twenty-eight million, six hundred ninety-nine thousand, eight hundred sixty-five".