223616809 has 8 divisors (see below), whose sum is σ = 241346952. Its totient is φ = 205962240.

The previous prime is 223616807. The next prime is 223616821. The reversal of 223616809 is 908616322.

223616809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 43520409 + 180096400 = 6597^2 + 13420^2 .

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 223616809 - 2¹ = 223616807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223616801) 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, 12664 + ... + 24649.

It is an arithmetic number, because the mean of its divisors is an integer number (30168369).

Almost surely, 2^223616809 is an apocalyptic number.

It is an amenable number.

223616809 is a deficient number, since it is larger than the sum of its proper divisors (17730143).

223616809 is a wasteful number, since it uses less digits than its factorization.

223616809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37787.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 223616809 is about 14953.8225547851. The cubic root of 223616809 is about 606.9712891055.

The spelling of 223616809 in words is "two hundred twenty-three million, six hundred sixteen thousand, eight hundred nine".