2228665 has 8 divisors (see below), whose sum is σ = 2685960. Its totient is φ = 1775232.

The previous prime is 2228663. The next prime is 2228687. The reversal of 2228665 is 5668222.

It can be written as a sum of positive squares in 4 ways, for example, as 2601 + 2226064 = 51^2 + 1492^2 .

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 2228665 - 2¹ = 2228663 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²⁰ + 2²⁰ + 8² + 6² + 6³ + 5³ .

It is not an unprimeable number, because it can be changed into a prime (2228663) 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, 517 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (335745).

2^2228665 is an apocalyptic number.

It is an amenable number.

2228665 is a deficient number, since it is larger than the sum of its proper divisors (457295).

2228665 is a wasteful number, since it uses less digits than its factorization.

2228665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931.

The product of its digits is 11520, while the sum is 31.

The square root of 2228665 is about 1492.8713943271. The cubic root of 2228665 is about 130.6215794683.

The spelling of 2228665 in words is "two million, two hundred twenty-eight thousand, six hundred sixty-five".