223649 has 8 divisors (see below), whose sum is σ = 240000. Its totient is φ = 207792.

The previous prime is 223637. The next prime is 223667. The reversal of 223649 is 946322.

223649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 223649 - 2⁴ = 223633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223679) 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, 1427 + ... + 1575.

It is an arithmetic number, because the mean of its divisors is an integer number (30000).

2²²³⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

223649 is a deficient number, since it is larger than the sum of its proper divisors (16351).

223649 is a wasteful number, since it uses less digits than its factorization.

223649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247.

The product of its digits is 2592, while the sum is 26.

The square root of 223649 is about 472.9154258427. The cubic root of 223649 is about 60.7000413445.

The spelling of 223649 in words is "two hundred twenty-three thousand, six hundred forty-nine".