2204689865 has 16 divisors (see below), whose sum is σ = 3087908352. Its totient is φ = 1479620544.

The previous prime is 2204689859. The next prime is 2204689967. The reversal of 2204689865 is 5689864022.

It is a cyclic number.

It is not a de Polignac number, because 2204689865 - 2⁴ = 2204689849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668474 + ... + 671763.

It is an arithmetic number, because the mean of its divisors is an integer number (192994272).

Almost surely, 2^2204689865 is an apocalyptic number.

It is an amenable number.

2204689865 is a deficient number, since it is larger than the sum of its proper divisors (883218487).

2204689865 is a wasteful number, since it uses less digits than its factorization.

2204689865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340296.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The square root of 2204689865 is about 46954.1251116449. The cubic root of 2204689865 is about 1301.5149724794.

The spelling of 2204689865 in words is "two billion, two hundred four million, six hundred eighty-nine thousand, eight hundred sixty-five".