228600861 has 16 divisors (see below), whose sum is σ = 309329280. Its totient is φ = 150149120.

The previous prime is 228600859. The next prime is 228600893. The reversal of 228600861 is 168006822.

It is a cyclic number.

It is not a de Polignac number, because 228600861 - 2¹ = 228600859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228600811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81661 + ... + 84413.

It is an arithmetic number, because the mean of its divisors is an integer number (19333080).

Almost surely, 2^228600861 is an apocalyptic number.

It is an amenable number.

228600861 is a deficient number, since it is larger than the sum of its proper divisors (80728419).

228600861 is a wasteful number, since it uses less digits than its factorization.

228600861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 228600861 is about 15119.5522751171. The cubic root of 228600861 is about 611.4476599478.

The spelling of 228600861 in words is "two hundred twenty-eight million, six hundred thousand, eight hundred sixty-one".