223684 has 6 divisors (see below), whose sum is σ = 391454. Its totient is φ = 111840.

The previous prime is 223681. The next prime is 223697. The reversal of 223684 is 486322.

It is a happy number.

223684 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 only one way, i.e., 222784 + 900 = 472^2 + 30^2 .

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (223681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27957 + ... + 27964.

2²²³⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

223684 is a deficient number, since it is larger than the sum of its proper divisors (167770).

223684 is a wasteful number, since it uses less digits than its factorization.

223684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55925 (or 55923 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 223684 is about 472.9524288975. The cubic root of 223684 is about 60.7032076014.

The spelling of 223684 in words is "two hundred twenty-three thousand, six hundred eighty-four".