222686809 has 8 divisors (see below), whose sum is σ = 228176960. Its totient is φ = 217210896.

The previous prime is 222686801. The next prime is 222686833. The reversal of 222686809 is 908686222.

It is a happy number.

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 222686809 - 2³ = 222686801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222686801) 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, 32524 + ... + 38770.

It is an arithmetic number, because the mean of its divisors is an integer number (28522120).

Almost surely, 2^222686809 is an apocalyptic number.

It is an amenable number.

222686809 is a deficient number, since it is larger than the sum of its proper divisors (5490151).

222686809 is an equidigital number, since it uses as much as digits as its factorization.

222686809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7119.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 222686809 is about 14922.6944282861. The cubic root of 222686809 is about 606.1286755624.

The spelling of 222686809 in words is "two hundred twenty-two million, six hundred eighty-six thousand, eight hundred nine".