220000865 has 32 divisors (see below), whose sum is σ = 319610880. Its totient is φ = 142110144.

The previous prime is 220000841. The next prime is 220000871. The reversal of 220000865 is 568000022.

It is a happy number.

220000865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 220000865 - 2⁸ = 220000609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 220000865.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51896 + ... + 55974.

It is an arithmetic number, because the mean of its divisors is an integer number (9987840).

Almost surely, 2^220000865 is an apocalyptic number.

It is an amenable number.

220000865 is a deficient number, since it is larger than the sum of its proper divisors (99610015).

220000865 is a wasteful number, since it uses less digits than its factorization.

220000865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 220000865 is about 14832.4261333067. The cubic root of 220000865 is about 603.6818648668.

Adding to 220000865 its reverse (568000022), we get a palindrome (788000887).

The spelling of 220000865 in words is "two hundred twenty million, eight hundred sixty-five", and thus it is an aban number.