228026665 has 4 divisors (see below), whose sum is σ = 273632004. Its totient is φ = 182421328.

The previous prime is 228026641. The next prime is 228026693. The reversal of 228026665 is 566620822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119596096 + 108430569 = 10936^2 + 10413^2 .

It is a cyclic number.

It is not a de Polignac number, because 228026665 - 2¹¹ = 228024617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22802662 + ... + 22802671.

It is an arithmetic number, because the mean of its divisors is an integer number (68408001).

Almost surely, 2^228026665 is an apocalyptic number.

It is an amenable number.

228026665 is a deficient number, since it is larger than the sum of its proper divisors (45605339).

228026665 is an equidigital number, since it uses as much as digits as its factorization.

228026665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45605338.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 228026665 is about 15100.5518111094. The cubic root of 228026665 is about 610.9352892235.

The spelling of 228026665 in words is "two hundred twenty-eight million, twenty-six thousand, six hundred sixty-five".