228621617 has 8 divisors (see below), whose sum is σ = 267654912. Its totient is φ = 191181600.

The previous prime is 228621571. The next prime is 228621629. The reversal of 228621617 is 716126822.

228621617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228621617 - 2⁶ = 228621553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228621647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398009 + ... + 398582.

It is an arithmetic number, because the mean of its divisors is an integer number (33456864).

Almost surely, 2^228621617 is an apocalyptic number.

It is an amenable number.

228621617 is a deficient number, since it is larger than the sum of its proper divisors (39033295).

228621617 is an equidigital number, since it uses as much as digits as its factorization.

228621617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796639.

The product of its digits is 16128, while the sum is 35.

The square root of 228621617 is about 15120.2386555239. The cubic root of 228621617 is about 611.4661650160.

The spelling of 228621617 in words is "two hundred twenty-eight million, six hundred twenty-one thousand, six hundred seventeen".